Vireo griseus relies heavily on acoustic and visual forms of communication. The primary call of this species has an explosive quality and may be described mnemonically as "quick-with-the-beer-check." Both the first and last notes are short and sharp, while the middle notes are a rapid warble. This song is given by males during the breeding season to establish territory and attract females. Fledgling males learn their father's song very early in life, and may begin mimicking his call as early as one month after leaving the nest. Young Vireo griseus may also develop some elements of their song by mimicking their neighbors. Both males and females give a harsh chattering call in response to predators or in territorial encounters between males. Within a mated pair, both also give short 'pik' contact calls to each other when nearby. Adults and nestlings that are several days old will emit a harsh squeal if captured and handled by humans (during banding) and likely serves to startle a predator or alert a mate.
Vireo griseus also uses body postures and behaviors to communicate, which may be done with or without vocal accompaniment. Alert, anxious individuals may perform exaggerated neck movements or wing flicks. These movements likely serve to intimidate predators or territorial intruders. Other warning behaviors include pecking at a nearby perch or their own feet. If the threat does not retreat, these vireos will perform an aerial attack.
Like most birds, Vireo griseus perceives its environment through auditory, visual, tactile and chemical stimuli.
Communication Channels: visual ; acoustic
Perception Channels: visual ; tactile ; acoustic ; chemical
The International Union for Conservation of Nature and Natural Resources (IUCN) currently considers Vireo griseus to be of least concern. This is due to the large population size, current increasing trend in population numbers, and relatively large geographical range. Although stable now, this species may be threatened by habitat loss in the future. The shrubby habitats that Vireo griseus prefers are often easy targets for human development including urbanization and conversion to agricultural fields.
US Migratory Bird Act: protected
US Federal List: no special status
CITES: no special status
State of Michigan List: no special status
IUCN Red List of Threatened Species: least concern
There are no known adverse effects of Vireo griseus on humans.
Vireo griseus has no known economic impacts on humans.
Vireo griseus serves as predator, prey, and seed dispersant within the ecosystems it inhabits. This species is largely insectivorous, particularly during the breeding season. These feeding habits likely have a significant impact on local insect communities, especially populations of Lepidoptera which are the preferred prey. During the non-breeding season Vireo griseus consumes mostly fruit and is likely an important seed dispersant for many plant species. Vireo griseus has a strong relationship with one fruit-bearing species, Bursera simaruba, and is the primary seed dispersant. Vireo griseus remains highly territorial during the non-breeding season and is known to aggressively defend Bursera simaruba plants in particular. The eggs and young of Vireo griseus are also prey for a variety of predators.
The diet of Vireo griseus varies seasonally, as it is primarily insectivorous during the breeding season and frugivorous during the non-breeding season. When foraging for insects, this species often perches motionless and tilts its head to visually locate and watch prey before acting. This is a foliage gleaning species, and after locating a prey item it will capture prey by hovering, hanging, lunging or picking. Caterpillars are preferred prey items, but Vireo griseus may also consume flies, spiders and their egg cases, damselflies, mayflies, beetles, cockroaches, stink bugs, leafhoppers, lacewings, bees, ants, and wasps, and grasshoppers.
During the non-breeding season, Vireo griseus consumes a wide variety of insects but is mostly frugivorous. This species has a very strong relationship with Bursera simaruba trees and is the primary seed dispersant. Unlike many species, Vireo griseus establishes territory during the non-breeding season and Bursera simaruba trees are often aggressively guarded. Across wintering regions, Vireo griseus may consume the fruit of sumac, dogwood, poison ivy, pokeweed, and waxmyrtle as well as wild grapes.
Animal Foods: insects
Plant Foods: fruit
Primary Diet: carnivore (Insectivore )
Vireo griseus is a Neotropical migrant that inhabits both the Nearctic and Neotropical regions. During the breeding season in the spring and summer months, these birds inhabit the southeastern United States and northeast Mexico. The northern extent of their range stretches from southern Iowa, across southern Michigan and to southern Massachusetts. They travel as far west as eastern Nebraska, Oklahoma and Texas. They are year-round residents along the southeast coastal United States from South Carolina to Texas, and also down through the east coast of Mexico. White-eyed vireos also overwinter in southern Mexico, Belize, Guatemala, Cuba, the Cayman Islands and the Bahamas.
Biogeographic Regions: nearctic (Native ); neotropical (Native )
Vireo griseus prefers brushy habitats defined by a dense understory layer, and generally located near a water source. They often inhabit abandoned agricultural fields that have lain fallow for 20 to 50 years to allow for adequate shrubby successional vegetation to grow. White-eyed vireos are frequently found in thickets alongside marshes and are one of the most prevalent avian species in the Central Everglades. In this region, white-eyed vireos prefer "bayhead" areas which are dominated by red bay (Persea borbonia), sweet bay (Magnolia virginiana), dahoon holly (Ilex cassine), and wax myrtle (Myrica cerifera).
Habitat Regions: temperate ; tropical ; terrestrial
Terrestrial Biomes: forest
Wetlands: marsh
Other Habitat Features: agricultural ; riparian
Specific predators of Vireo griseus have rarely been documented. Most predation occurs during the breeding season as eggs and nestlings are abundant and make easy prey. Hypothesized predators include snakes, mice, chipmunks, blue Jays, raccoons, skunks, and opossums. There is very little evidence for predation of adults, but one case has been documented of adult capture and consumption by a short-tailed hawk in Florida.
When predators are near a nest, the Vireo griseus pair will emit harsh, rapid chattering. Adults will also peck at their perch or feet which may precede an aerial attack if the intruder does not retreat.
Known Predators:
Vireo griseus is a small, stocky vireo measuring 12.7 cm in length, with a 19 cm wingspan and weighing 11.5 g. They have dark olive backs, with darker, almost black wings and tails. They have two white wingbars and white to yellow edges on the primaries. The nape is gray and borders an olive-colored head. One of the most defining features of this vireo are the bright yellow "spectacles" that include the lores and surround the eyes. True to the common name, another identifying feature are the white irises that they develop as adults. They have whitish throats and undersides with pale yellow flanks and undertail coverts. Beaks and legs are black. Juveniles exhibit dark irises which will retain this coloration through their first year. Juveniles may also be identified by white "spectacles", an entirely pale gray head and overall paler plumage. This species displays no sexual dimorphism.
Average mass: 11.5 g.
Average length: 12.7 cm.
Average wingspan: 19.0 cm.
Other Physical Features: endothermic ; homoiothermic; bilateral symmetry
Sexual Dimorphism: sexes alike
Lifespan for Vireo griseus is currently unknown. Adult survivorship ranges from 15 to over 57% depending on environmental conditions. First year survivorship is unknown. Possible causes of mortality include nest predation and severe weather.
Like all vireos, Vireo griseus is monogamous. Males establish territories and females visit several and eventually select a suitable mate. There are no specific courtship displays, but pairs appear to court each other for several days during which time they forage together with the male closely following the female. Pair bonds seem to last only one season.
Mating System: monogamous
Vireo griseus individuals breed once a year during the breeding season which lasts from late April to early August. Once pairs have formed, they begin searching for a nesting site which is usually less than 1 m from the ground in dense vegetation. Females select the site, while the males follow close behind. They usually select a suitable, forked branch where they can construct a suspended, cup-shaped nest. Both participate in nest building and they collect spiderweb silk, twigs, bark strips, and grass to incorporate into the nest. This process takes 3 to 5 days to complete. The female typically lays 4 eggs, and will lay one per day starting 1 to 3 days after the nest is complete. Incubation is done by both parents and will last 13 to 15 days. After the young hatch, they will fledge after 9 to 11 days and will be brooded by their parents for an additional 23 days at most. White-eyed vireos can breed during their first spring, though not all are successful.
Breeding interval: White-eyed vireos breed once yearly.
Breeding season: White-eyed vireos breed from April through August.
Range eggs per season: 3 to 5.
Range time to hatching: 13 to 15 days.
Range fledging age: 9 to 11 days.
Range time to independence: 23 (high) days.
Average age at sexual or reproductive maturity (female): <1 years.
Average age at sexual or reproductive maturity (male): <1 years.
Key Reproductive Features: iteroparous ; seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; oviparous
After selecting a suitable nesting site and constructing a secure nest for their young, both parents participate in incubating the clutch. After hatching, the altricial young require constant feeding and brooding, again by both parents. Male and female white-eyed vireos develop brood patches, though the male's is not vascularized. Parents continue to brood their young throughout the nestling and fledgling periods, which may last up to 34 days total.
Parental Investment: altricial ; male parental care ; female parental care ; pre-fertilization (Provisioning, Protecting: Female); pre-hatching/birth (Provisioning: Male, Female, Protecting: Male, Female); pre-weaning/fledging (Provisioning: Male, Female, Protecting: Male, Female); pre-independence (Provisioning: Male, Female, Protecting: Male, Female)
A medium-sized (5 inches) vireo, the White-eyed Vireo is most easily identified by its olive-green back and tail, pale breast with yellow flanks, white wing bars, and striking white eyes with yellow eye-rings. This species may be separated from its tropical relative, the Thick-billed Vireo (Vireo crassirostris), by that species’ darker wings, greener body, and thicker bill. Male and female White-eyed Vireos are similar to one another in all seasons. The White-eyed Vireo breeds in the eastern United States, where it occurs from Massachusetts south to Florida and west to Texas, as well as in northeastern Mexico. During the winter, northerly-breeding populations winter from the Bahamas south to northern Central America. Populations breeding in the southern part of this species’ breeding range are non-migratory. White-eyed Vireos breed in areas of thick brush and scrub, particularly along forest edges, in bushy fields, and in thick dune vegetation. Populations which migrate to the tropics for the winter utilize similar types of habitat as they do during the summer. White-eyed Vireos primarily eat small insects, but also eat small quantities of fruits and berries during the winter. White-eyed Vireos spend much of their time foraging for food on leaves and branches in dense brush, where they are often difficult to see. Birdwatchers may alternatively listen for this species’ song, a rapid “chick-a-per-weeoo-chick.” White-eyed Vireos are primarily active during the day, but, like many migratory songbirds, this species migrates at night.
A medium-sized (5 inches) vireo, the White-eyed Vireo is most easily identified by its olive-green back and tail, pale breast with yellow flanks, white wing bars, and striking white eyes with yellow eye-rings. This species may be separated from its tropical relative, the Thick-billed Vireo (Vireo crassirostris), by that species’ darker wings, greener body, and thicker bill. Male and female White-eyed Vireos are similar to one another in all seasons. The White-eyed Vireo breeds in the eastern United States, where it occurs from Massachusetts south to Florida and west to Texas, as well as in northeastern Mexico. During the winter, northerly-breeding populations winter from the Bahamas south to northern Central America. Populations breeding in the southern part of this species’ breeding range are non-migratory. White-eyed Vireos breed in areas of thick brush and scrub, particularly along forest edges, in bushy fields, and in thick dune vegetation. Populations which migrate to the tropics for the winter utilize similar types of habitat as they do during the summer. White-eyed Vireos primarily eat small insects, but also eat small quantities of fruits and berries during the winter. White-eyed Vireos spend much of their time foraging for food on leaves and branches in dense brush, where they are often difficult to see. Birdwatchers may alternatively listen for this species’ song, a rapid “chick-a-per-weeoo-chick.” White-eyed Vireos are primarily active during the day, but, like many migratory songbirds, this species migrates at night.
Distribucion General: Se reproduce desde el extremo sureste de Canadá hasta la parte central de México y Florida. Invierna desde el sureste de E.U.A. hasta las Antillas Mayores y el norte de Nicaragua; llega casualemente hasta el oeste de Panamá.
Les especies d'aves con nome común en llingua asturiana márquense como NOA. En casu contrariu, conséñase'l nome científicu o de la SEO.
Vireo griseus ye una especie d'ave paseriforme, perteneciente a la familia Vireonidae, del xéneru Vireo.[1] Distribúise per Hondures, Méxicu, Cuba, Guatemala y Estaos Xuníos.[2]
Estáu de caltenimientu: Esmolición menor (UICN 3.1) El vireo de güeyos blancos, Vireo griseus, ye un pequeñu páxaru cantor, Reproducir
nel sureste de los EE.XX. de Nueva Jersey al oeste hasta'l norte de Missouri
y el sur de Texas y Florida, y tamién nel este de Méxicu, el norte d'América Central, Cuba y les Bahames, Poblaciones na mariña del Golfu d'EE.XX., y más al sur, son residentes, pero les aves d'América del Norte la mayoría de migrar escontra'l sur pel hibiernu, Esti vireo frecuenta carbes y parrotales nel cultivu de camperes abandonaes o cubiertu. El nial de yerba alliniaos ye una forma de copa, llimpiu, xuníu a un tenedor na caña d'un árbol poles teles d'araña. 3-5 escuru con llurdios blancos asítiense los güevos, Tantu'l machu y fema guara los güevos mientres 12 a 16 díes,Los mozos abandonen el nial 9-11 díes dempués de la nacencia.
El Vireo güeyos blancos ye de 13 - 15 cm de llargor. La so cabeza y el llombu son una d'oliva abuxáu, y les partes inferiores son blanques, colos lladrales de color mariellu.
Les nales y la cola son de color escuru, y hai dos barras de nala blanca en cada nala. Los güeyos tienen iris blancu, y tán arrodiaos de gafes marielles. Los sexos son similares.
Los güeyos blancos Vireo de cantar ye una variable y rápida seis-siete frase nota, empezando y terminando con una moza fuerte, Mientres la temporada de cría, la dieta d'esta especie componse casi puramente d'inseutos, principalmente guxanos. Na seronda y l'iviernu complementa'l so dieta d'inseutos coles bagues
.
Esta páxina forma parte del wikiproyeutu Aves, un esfuerciu collaborativu col fin d'ameyorar y organizar tolos conteníos rellacionaos con esti tema. Visita la páxina d'alderique del proyeutu pa collaborar y facer entrugues o suxerencies. 
Vireo griseus Les especies d'aves con nome común en llingua asturiana márquense como NOA. En casu contrariu, conséñase'l nome científicu o de la SEO. Vireo griseus ye una especie d'ave paseriforme, perteneciente a la familia Vireonidae, del xéneru Vireo. Distribúise per Hondures, Méxicu, Cuba, Guatemala y Estaos Xuníos.
Aderyn a rhywogaeth o adar yw Fireo llygadwyn (sy'n enw gwrywaidd; enw lluosog: fireod llygadwyn) a adnabyddir hefyd gyda'i enw gwyddonol Vireo griseus; yr enw Saesneg arno yw White-eyed vireo. Mae'n perthyn i deulu'r Fireod (Lladin: Vireonidae) sydd yn urdd y Passeriformes.[1]
Talfyrir yr enw Lladin yn aml yn V. griseus, sef enw'r rhywogaeth.[2] Mae'r rhywogaeth hon i'w chanfod yng Ngogledd America.
Mae'r fireo llygadwyn yn perthyn i deulu'r Fireod (Lladin: Vireonidae). Dyma rai o aelodau eraill y teulu:
Rhestr Wicidata:
rhywogaeth enw tacson delwedd Fireo Bell Vireo bellii Fireo bronfelyn y Gogledd Vireo flavifrons
.jpg)
Aderyn a rhywogaeth o adar yw Fireo llygadwyn (sy'n enw gwrywaidd; enw lluosog: fireod llygadwyn) a adnabyddir hefyd gyda'i enw gwyddonol Vireo griseus; yr enw Saesneg arno yw White-eyed vireo. Mae'n perthyn i deulu'r Fireod (Lladin: Vireonidae) sydd yn urdd y Passeriformes.
Talfyrir yr enw Lladin yn aml yn V. griseus, sef enw'r rhywogaeth. Mae'r rhywogaeth hon i'w chanfod yng Ngogledd America.
The white-eyed vireo (Vireo griseus) is a small songbird of the family Vireonidae.
It breeds in the eastern United States from New England west to northern Missouri and south to Texas and Florida, and also in eastern Mexico, northern Central America, Cuba and the Bahamas. Populations on the US Gulf Coast and further south are resident, but most North American birds migrate south in winter. This vireo frequents bushes and shrubs in abandoned cultivation or overgrown pastures.
The grass-lined nest is a neat cup shape, attached to a fork in a tree branch by spider webs. It lays 3–5 dark-spotted white eggs. Both the male and female incubate the eggs for 12–16 days. The young leave the nest 9–11 days after hatching.
Measurements:[2]
Its head and back are a greyish olive, and the underparts are white with yellow flanks. The wings and tail are dark, and there are two white wing bars on each wing. The eyes have white irises, and are surrounded by yellow spectacles. Sexes are similar.
The white-eyed vireo's song is a variable and rapid six to seven note phrase, starting and ending with a sharp chick.
During the breeding season, the diet of this species consists almost exclusively of insects, primarily caterpillars. In the autumn and winter it supplements its diet of insects with berries.
The white-eyed vireo was described by the French polymath Georges-Louis Leclerc, Comte de Buffon in 1780 in his Histoire naturelle des oiseaux.[3] The bird was also illustrated in a hand-coloured plate engraved by François-Nicolas Martinet in the Planches Enluminées D'Histoire Naturelle which was produced under the supervision of Edme-Louis Daubenton to accompany Buffon's text.[4] Neither the plate caption nor Buffon's description included a scientific name but in 1783 the Dutch naturalist Pieter Boddaert coined the binomial name Tanagra grisea in his catalogue of the Planches Enluminées.[5] Buffon specified that his specimen had come from Louisiana, but in 1945 the type locality was restricted to New Orleans.[6][7] The white-eyed vireo is now placed in the genus Vireo was introduced in 1808 by the French ornithologist Louis Jean Pierre Vieillot.[8][9] The word vireo was used by Latin authors for a small green migratory bird, probably a Eurasian golden oriole but a European greenfinch has also been suggested. The specific epithet griseus is Medieval Latin for grey.[10]
Six subspecies are recognised:[9]
The northern subspecies, V. g. noveboracensis, occupies most of the range of this species and is fully migratory. This sub-species is larger and has more brightly colored plumage than all other subspecies.
The resident southeastern coastal plain race, V. g. griseus is a slightly smaller and duller colored subspecies. It does not typically migrate out of its breeding range in the winter.
The resident Florida Keys race, V. g. maynardi, is greyer above and whiter below, and the south Texan V. g. micrus is like a smaller maynardi.
V. g. bermudianus is endemic to Bermuda, where it is known as the Chick of the Village.[13][14] This has shorter wings and a duller plumage. Along with other endemic and native Bermudian birds, it was threatened with extinction following the loss of 8 million Bermuda cedar trees in the 1940s, and is now quite rare. This species is listed under the Bermuda Protected Species Act 2003.
_at_Clarks_River_National_Wildlife_Refuge.jpg)
White-eyed vireo (Vireo griseus) at Clarks River National Wildlife Refuge
White-eyed Vireo
_in_Fiddlewood_(Citharexylum_spinosum),_Bermuda.jpg)
Vireo griseus bermudianus in Bermuda
_in_Bermuda.jpg)
White-eyed vireo (Vireo griseus bermudianus) in Bermuda
White-eyed Vireo by Alastair Rae
The white-eyed vireo (Vireo griseus) is a small songbird of the family Vireonidae.
La Blankokula vireo, Vireo griseus, estas specio de birdo de la familio de Vireedoj kaj genro de Vireoj, kiuj estas malgrandaj paserinaj birdoj ter- al verdokoloraj.
Ĝi reproduktiĝas en sudorienta Usono el Nov-Ĵerzejo okcidenten al norda Misurio kaj suden al Teksaso kaj Florido, kaj ankaŭ en orienta Meksiko, norda Centrameriko, Kubo kaj Bahamoj.
Populacioj de Usono ĉe la Golfa marbordo kaj pli sude estas loĝantaj birdoj, sed plej parto de birdoj de Nordameriko migras suden vintre.
Tiu vireo loĝas en arbustaroj en abandonitaj terkultivejoj aŭ trokreskantaj paŝtejoj.
La herbokovrita nesto estas tasforma kaj ligita al forko en arbobranĉo pere de araneretoj. La ino demetas 3-5 malhelpunktitajn ovojn. Ambaŭ gepatroj kovas la ovojn dum 12 – 16 tagoj. Elnestiĝo okazas 9 – 11 tagojn post eloviĝo.
La Blankokula vireo estas 13 – 15 longa. Ties kapo kaj dorso estas grizecolivecaj, kaj subaj partoj estas blankecaj kun flavaj flankoj. Flugiloj kaj vosto estas malhelaj kaj estas du blankaj flugilstrioj en ĉiu flugilo. La okuloj havas tre blankajn irisojn bone markatajn de malhela bordo, kaj estas ĉirkaŭataj de flavaj “vitrokuloj” nome flava areo kunigita pere de samkolora strio al la bekobazo super malhela bridostrio kiu venas rekte al la okulo. La tre rimarkindaj blankaj irisoj nomigas la specion en esperanto kaj la grizaj krono kaj dorso en la latina scienca nomo. Ambaŭ seksoj estas similaj.
La kanto de la Blankokula vireo estas varia kaj rapida kun frazo de 6 al 7 notoj, kiu komencas kaj finas per akra ĉik.
Dum la reprodukta sezono la dieto de tiu specio konsistas preskaŭ nur de insektoj, ĉefe raŭpoj. Aŭtune kaj vintre ili suplementas sian dieton pere de insektoj kaj beroj.
Oni agnoskis kelkajn subspeciojn por la Blankokula vireo. La geografiaj teritorioj de tiuj subspecioj ne estas klaraj.
La norda subspecio, V. g. noveboracensis, okupas plej parton de la teritorio de tiu nearktisa kaj neotropisa specio kaj estas tute migranta. Tiu subspecio estas pli granda kaj havas pli brilkoloran plumaron ol la aliaj subspecioj.
La raso de loĝantaj birdoj de sudorienta marbordaj ebenaĵoj nome V. g. griseus estas iom pli malgranda kaj senkolora subspecio. Ili kutime ne migras for de sia reprodukta teritorio vintre.
La raso de loĝantaj birdoj de Floridaj rifoj nome V. g. maynardi estas pli griza supre kaj pli blanka sube, kaj la suda teksana V. g. micrus estas kiel pli malgranda maynardi.
V. g. bermudianus estas endemia de Bermudo. Tiu havas pli mallongajn flugilojn kaj pli senkoloran plumaron. Kun aliaj endemiaj kaj indiĝenaj bermudaj birdoj, ili estas minacataj al formorto sekve de la perdo de 8 milionoj de arboj de la specio Bermuda junipero en la 1940-aj jaroj, kaj nuntempe tiu subspecio estas tre rara.
La Blankokula vireo, Vireo griseus, estas specio de birdo de la familio de Vireedoj kaj genro de Vireoj, kiuj estas malgrandaj paserinaj birdoj ter- al verdokoloraj.
El vireo ojiblanco[3] (Vireo griseus), es una especie de ave paseriforme de la familia Vireonidae perteneciente al numeroso género Vireo. Se distribuye por el centro norte y este de Estados Unidos (donde anida) y México, América Central e islas del Caribe hacia donde migra o es residente.[4]
Se le denomina vireo ojiblanco (en Costa Rica, Honduras, México y Nicaragua), julián chiví ojiblanco, verderón grisáceo (en Colombia), vireo de ojo blanco (en Cuba y República Dominicana), vireo ojo blanco o de ojos blancos (en México).[2]
Esta especie anida en el centro norte y sureste de los Estados Unidos y migra hacia México, al sur hasta Honduras y Cuba en los inviernos boreales, es residente en Florida, sur de Texas, México y Bermuda.[4] Aparte de los países ya mencionados, se registra su presencia en Bahamas; Belice; Canadá; Islas Cayman; Colombia; Costa Rica; Guadeloupe; Guatemala; Nicaragua; Puerto Rico; Turks y Caicos e Islas Vírgenes Británicas. Es también registrado como divagante en República Dominicana; Haití; Jamaica; Panamá; Saint Pierre y Miquelon; Trinidad y Tobago e Islas Vírgenes de los Estados Unidos.[1]
Es una especie común en su hábitat preferido de matorrales secundarios caducifolios densos, bordes de bosques y pastos altos.[5]
Mide entre 13 y 15 cm de longitud. Su cabeza y la espalda son una de oliva grisáceo, y las partes inferiores son blancas, con los flancos de color amarillo. Las alas y la cola son de color oscuro, y hay dos barras de ala blanca en cada ala. Los ojos tienen iris blanco, y están rodeados de gafas amarillas. Los sexos son similares.[6]
Durante la temporada de cría, la dieta de esta especie se compone casi exclusivamente de insectos, principalmente orugas. En el otoño y el invierno se complementa su dieta de insectos con bayas.
El nido es hecho de hierbas en forma de cuenco, limpio, unido a una horquilla en la rama de un árbol por telarañas. Depositan 3-5 huevos oscuros con manchas blancas. Tanto el macho como la hembra incuban los huevos durante 12 a 16 días. Los jóvenes abandonan el nido 9-11 días después del nacimiento.
El macho emite cantos complejos y explosivos. Los individuos tienen un repertorio de una docena o más de cantos, cada uno compuesto de 6 a 10 elementos variables.[5] El canto típico es una frase sonora y variable de 5 a 7 notas usualmente iniciando y terminando con un agudo “chick”.[6]
Se reconocen las siguientes subespecies con la respectiva distribución geográfica:[4]
La clasificación Clements checklist no reconoce marshalli, incluida en perquisitor[7] y el Congreso Ornitológico Internacional (IOC, versión 6.2.) no reconoce noveboracensis, incluida en la nominal.[8]
El vireo ojiblanco (Vireo griseus), es una especie de ave paseriforme de la familia Vireonidae perteneciente al numeroso género Vireo. Se distribuye por el centro norte y este de Estados Unidos (donde anida) y México, América Central e islas del Caribe hacia donde migra o es residente.
Vireo griseus Vireo generoko animalia da. Hegaztien barruko Vireonidae familian sailkatua dago.
Vireo griseus Vireo generoko animalia da. Hegaztien barruko Vireonidae familian sailkatua dago.
Valkosilmävireo (Vireo griseus) on Pohjois-Amerikassa tavattava vireoihin kuuluva lintulaji. Sitä esiintyy Yhdysvaltojen eteläosissa ympäri vuoden, kesäisin sen esiintymisalue ulottuu Uuteen-Englantiin asti. Laji viihtyy pensaikoissa ja metsänreunoissa.
Valkosilmävireo (Vireo griseus) on Pohjois-Amerikassa tavattava vireoihin kuuluva lintulaji. Sitä esiintyy Yhdysvaltojen eteläosissa ympäri vuoden, kesäisin sen esiintymisalue ulottuu Uuteen-Englantiin asti. Laji viihtyy pensaikoissa ja metsänreunoissa.
Vireo griseus
Le Viréo aux yeux blancs (Vireo griseus) est une espèce de petit passereau de la famille des Vireonidae.
Le Viréo aux yeux blancs mesure entre 13 et 15 cm de longueur. Sa tête et son dos sont d'un gris olive, les parties inférieures sont blanches tandis que les flancs sont jaunes. Les ailes et la queue sont sombres et il y a deux barres alaires blanches sur chaque aile. Les yeux ont des iris blancs tandis que les lores et les anneaux oculaires sont jaunes. Les sexes sont semblables.
Ce viréo niche au sud-est des États-Unis, du New Jersey au nord jusqu'au Texas et à la Floride au sud. Il se retrouve également dans l'est du Mexique, au nord de l'Amérique centrale, à Cuba et aux Bahamas. Les populations de la Côte du Golfe et celles plus au sud sont résidentes, mais la plupart des individus en Amérique du Nord migrent vers le sud en hiver.
Cette espèce fréquente les arbustes dans les champs et les pâturages abandonnés.
Pendant la période de nidification, le Viréo aux yeux blancs se nourrit presque exclusivement d'insectes, surtout des chenilles. En automne et en hiver, il ajoute des baies à son régime alimentaire.
Le nid est une coupe et son intérieur est recouvert d'herbes. Il est attaché à la fourche d'une branche d'arbre à l'aide de toiles d'araignée. La femelle pond de 3 à 5 œufs blancs tachetés de brun. Les œufs sont incubés par les deux sexes pendant 12-16 jours. Les jeunes quittent le nid environ 10 jours après l'éclosion.
Cinq sous-espèces sont reconnues pour le Viréo aux yeux blancs. La répartition géographique des sous-espèces n'est pas encore totalement établie :
Vireo griseus
Le Viréo aux yeux blancs (Vireo griseus) est une espèce de petit passereau de la famille des Vireonidae.
De witoogvireo (Vireo griseus) is een zangvogel uit de familie Vireonidae (vireo's).
Deze soort telt 6 ondersoorten:
De witoogvireo (Vireo griseus) is een zangvogel uit de familie Vireonidae (vireo's).
Vireo griseus é um pequeno pássaro comum no sueste da América do Norte e nas Caraíbas. Nidifica desde New Jersey para oeste até ao norte do Missouri e para sul até ao Texas e Florida, para além do leste do México, o norte da América Central, Cuba, Bermuda e as Bahamas. As populações da América Central, Caraíbas e das costas do Golfo do México são residentes permanentes, mas as populações do sueste da América do Norte são migradoras, deslocando-se para a região do Golfo do México durante o inverno.
Vireo griseus é um pequeno pássaro comum no sueste da América do Norte e nas Caraíbas. Nidifica desde New Jersey para oeste até ao norte do Missouri e para sul até ao Texas e Florida, para além do leste do México, o norte da América Central, Cuba, Bermuda e as Bahamas. As populações da América Central, Caraíbas e das costas do Golfo do México são residentes permanentes, mas as populações do sueste da América do Norte são migradoras, deslocando-se para a região do Golfo do México durante o inverno.
Vitögd vireo[2] (Vireo griseus) är en sångfågel i ordningen tättingar som tillhör familjen vireor. [3]
Dess häckningsområde sträcker sig från sydöstra USA, från New Jersey och västerut till norra Missouri, och söderut till Texas och Florida. Den häckar även i östra Mexiko, norra Centralamerika, Kuba och på Bahamas. Populationerna i Mexikanska golfens kust och söderut är stannfåglar, medan majoriteten av den nordamerikanska populationen flyttar söderut under vintern.
Den delas ofta upp i sex underarter men deras exakta geografiska utbredning är inte helt utredda:
Den nordligaste underarten noveboracensis har det största utbredningsområdet.
Fågeln är 13–15 centimeter lång. Dess huvud och rygg är gråa med en olivgrönton, och underdelen är vit med gula sidor. Vingarna och svansen är mörka, och det är två vita vingband på varje vinge. Ögonen har vita irisar omgivna av gult. De båda könen ser likadana ut.
Den vitögda vireons sång är en ändrande och snabb fras med sex till sju ljud, som börjar och slutar med ett skarpt chick. Underarten V. g. noveboracensis är större än de andra underarterna. V. g. griseus är något mindre och mattare färgad. V. g. maynardi är gråare på ovansidan och vitare på undansidan och V. g. micrus påminner om en mindre maynardi. V. g. bermudianus som är endemisk för Bermuda har kortare vingar och en mattare fjäderdräkt.
Fågeln bor i buskområden vid övergivna odling- eller betesmarker. Dess gräsbeklädda näste är prydligt koppformat, och hänger i en klyka i en trädgren. Den lägger tre till fem ägg med mörka fläckar, och bägge könen ruvar äggen i tolv till 16 dagar. Ungarna lämnar nästet nio till elva dagar efter kläckningen.
Under häckningssäsongen äter fågeln mest insekter, och huvudsakligen fjärilslarver. Under hösten och vintern kompletterar den med bär.
Världspopulationen är inte hotad och kategoriseras av IUCN som livskraftig (LC). Vissa populationer är dok hotade. Exempelvis V. g. bermudianus på Bermuda, som tillsammans med en rad andra inhemska fågelarter, hotades under 1940-talet på grund av nedhuggningen av åtta miljoner Juniperus bermudiana. Idag är taxonet ganska ovanligt.
Wikimedia Commons har media som rör vitögd vireo.
Vireo griseus là một loài chim trong họ Vireonidae.[1]
Vireo griseus là một loài chim trong họ Vireonidae.
