Lasiurus borealis (Müller 1776)

Description: Lasiurus borealis Müller, 1776 - subfossil red bat in the Holocene of Kentucky, USA. This is a desiccated red bat in western Kentucky's Mammoth Cave, the longest cave on Earth. As of fall 2017, 412 miles have been explored and mapped. Multiple species of bats were formerly abundant in Mammoth Cave. Populations have been decimated by human activities from the late 1700s to the present and by white nose syndrome. The latter is a fungal disease that only affects bats. The fungus Geomyces destructans (a.k.a. Pseudogymnoascus destructans) grows on the face of bats during winter hibernation. The fungal growth irritates the skin (it's itchy) and wakes the bats during hibernation. Once awake, bats fly outside looking for food. Flying insects are absent in wintertime, so the bats die of starvation. The disease went through Europe's bat populations long ago, and they are now immune. The disease was introduced from the Old World to North America at least by 2006, likely via caving equipment. Remains of bats are moderately common in Mammoth Cave - these include guano deposits, bones, and mummified carcasses with varying amounts of preserved soft parts. Shown above is an exquisitely preserved, "mummified" red bat in Gothic Avenue. It has been preserved by desiccation. A subterranean river used to flow through here during the Pliocene, but the water table has long since lowered. Much of Gothic Avenue is bone dry. This specimen is not technically a fossil. Fossils are any evidence of ancient life, "ancient" meaning Pleistocene-aged or older. I doubt that this specimen has been carbon-dated, but it is likely Holocene in age, making it "subfossil". Classification: Animalia, Chordata, Vertebrata, Mammalia, Chiroptera, Vespertilionidae Locality: Gothic Avenue, Mammoth Cave Ridge, Mammoth Cave National Park, western Kentucky, USA See info. at: en.wikipedia.org/wiki/Eastern_red_bat and en.wikipedia.org/wiki/White-nose_syndrome. Date: 1 August 2010, 21:16. Source: Lasiurus borealis (mummified red bat) (Holocene; Gothic Avenue, Mammoth Cave, Kentucky, USA) 1. Author: James St. John.

Description: Busch Conservation Area Missouri. Date: 16 December 2018, 16:32. Source: Eastern Red Bat. Author: Andy Reago & Chrissy McClarren.

Description: English: Eastern red bat (Lasiurus borealis), roosting at "Griffy lake," Bloomington, IN. Date: 4 April 2010. Source: Own work. Author: Chris Harshaw.

Description: English: Eastern red bat (Lasiurus borealis), roosting at "Griffy lake," Bloomington, IN. Date: 4 April 2010. Source: Own work. Author: Chris Harshaw.

Description: Lasiurus borealis. Date:. Source: : This image is Image Number 5369392 at Forestry Images, a source for forest health, natural resources and silviculture images operated by The Bugwood Network at the University of Georgia and the USDA Forest Service.. Author: Susan Ellis, Bugwoord.org. Permission (Reusing this file): : This file is licensed under the Creative Commons Attribution 3.0 United States license.:. You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). http://creativecommons.org/licenses/by/3.0/us/deed.en CC BY 3.0 us Creative Commons Attribution 3.0 us truetrue. : This file, which was originally posted to Forestry Images, was reviewed on 1 September 2011 by the administrator or reviewer Hoangquan hientrang, who confirmed that it was available there under the stated license on that date..

Description: Busch Conservation Area Missouri. Date: 16 December 2018, 16:35. Source: Eastern Red Bat. Author: Andy Reago & Chrissy McClarren.

Description: Busch Conservation Area Missouri. Date: 16 December 2018, 16:34. Source: Eastern Red Bat. Author: Andy Reago & Chrissy McClarren.

Description: English: Eastern Red Bat (Lasiurus borealis), roosting at "Griffy Lake", Bloomington, IN. Date: 4 April 2010, 14:16:02. Source: Chris Harshaw (crop and white balance of File:Red bat (4a).JPG). Author: Cephas.

Description: Busch Conservation Area Missouri. Date: 16 December 2018, 16:34. Source: Eastern Red Bat. Author: Andy Reago & Chrissy McClarren.

Description: English: Eastern Red Bat (Lasiurus borealis), roosting at "Griffy Lake", Bloomington, IN. Date: 4 April 2010. Source: Own work. Author: Chris Harshaw.

Description: Busch Conservation Area Missouri. Date: 16 December 2018, 16:33. Source: Eastern Red Bat. Author: Andy Reago & Chrissy McClarren.

Description: English: Lasiurus borealis, referred to in text as Vespertilio lasiurus, as illustrated in 1774 by Schreber. Date: 1774. Source: Die Säugthiere in Abbildungen nach der Natur, mit Beschreibungen. Author: Johann Christian Daniel von Schreber.

The Eastern Red Bat (Lasiurus borealis) is a species of bat from the Vespertilionidae family. See also the Desert red bat (Lasiurus blossevillii), a related species.Eastern red bats are widespread across eastern North America, with additional records in Bermuda. It is also scarce but widespread throughout many of the Bahamian islands. This is a medium-sized Vespertilionid, averaging weights of 9.5-14 g and measurements of 112.3 mm in total length. Adults are usually dimorphic: males have red hair while females are chestnut-colored with whitish frosting on the tips of the fur.Like most Vespertilionids, eastern red bats are insectivorous. Moths (Lepidoptera) form the majority of the diet, but red bats also prey heavily on beetles (Coleoptera), flies (Diptera), and other insects. Echolocation calls have low minimum frequencies, but calls are highly variable ranging from (35-50 kHz). Eastern red bats are best suited for foraging in open spaces due to their body size, wing shape, and echolocation call structure. However, red bats are frequently captured by researches foraging over narrow streams and roadsMating likely occurs in late summer or autumn and the sperm is stored in the female's reproductive tract until spring when ovulation and fertilization occurs. In June, females usually give birth to three or four young and then roost with their young until they are weaned. Males roost alone throughout the Summer. High temperature demands associated with gestation and rearing young may limit the northern range for reproductive females. Eastern red bats often roost amongst live or dead leaves on the branches of live hardwood trees, but have also been found using loblolly pine trees in pine plantations.In late summer, eastern red bats from the northern parts of the range may migrate south for the winter, although little is known about migration routes or overwintering range. In winter, red bats forage for insects on warm nights and even warm days. On warm days during the winter, red bats enter torpor while roosting in the canopy of hardwood or coniferous trees, but during cold bouts they crawl underneath dead leaf litter on the ground and use their furred tail as a blanket.

The Eastern Red Bat (Lasiurus borealis) is a species of bat from the Vespertilionidae family. See also the Desert red bat (Lasiurus blossevillii), a related species.Eastern red bats are widespread across eastern North America, with additional records in Bermuda. It is also scarce but widespread throughout many of the Bahamian islands. This is a medium-sized Vespertilionid, averaging weights of 9.5-14 g and measurements of 112.3 mm in total length. Adults are usually dimorphic: males have red hair while females are chestnut-colored with whitish frosting on the tips of the fur.Like most Vespertilionids, eastern red bats are insectivorous. Moths (Lepidoptera) form the majority of the diet, but red bats also prey heavily on beetles (Coleoptera), flies (Diptera), and other insects. Echolocation calls have low minimum frequencies, but calls are highly variable ranging from (35-50 kHz). Eastern red bats are best suited for foraging in open spaces due to their body size, wing shape, and echolocation call structure. However, red bats are frequently captured by researches foraging over narrow streams and roadsMating likely occurs in late summer or autumn and the sperm is stored in the female's reproductive tract until spring when ovulation and fertilization occurs. In June, females usually give birth to three or four young and then roost with their young until they are weaned. Males roost alone throughout the Summer. High temperature demands associated with gestation and rearing young may limit the northern range for reproductive females. Eastern red bats often roost amongst live or dead leaves on the branches of live hardwood trees, but have also been found using loblolly pine trees in pine plantations.In late summer, eastern red bats from the northern parts of the range may migrate south for the winter, although little is known about migration routes or overwintering range. In winter, red bats forage for insects on warm nights and even warm days. On warm days during the winter, red bats enter torpor while roosting in the canopy of hardwood or coniferous trees, but during cold bouts they crawl underneath dead leaf litter on the ground and use their furred tail as a blanket.

The Eastern Red Bat (Lasiurus borealis) is a species of bat from the Vespertilionidae family. See also the Desert red bat (Lasiurus blossevillii), a related species.Eastern red bats are widespread across eastern North America, with additional records in Bermuda. It is also scarce but widespread throughout many of the Bahamian islands. This is a medium-sized Vespertilionid, averaging weights of 9.5-14 g and measurements of 112.3 mm in total length. Adults are usually dimorphic: males have red hair while females are chestnut-colored with whitish frosting on the tips of the fur.Like most Vespertilionids, eastern red bats are insectivorous. Moths (Lepidoptera) form the majority of the diet, but red bats also prey heavily on beetles (Coleoptera), flies (Diptera), and other insects. Echolocation calls have low minimum frequencies, but calls are highly variable ranging from (35-50 kHz). Eastern red bats are best suited for foraging in open spaces due to their body size, wing shape, and echolocation call structure. However, red bats are frequently captured by researches foraging over narrow streams and roadsMating likely occurs in late summer or autumn and the sperm is stored in the female's reproductive tract until spring when ovulation and fertilization occurs. In June, females usually give birth to three or four young and then roost with their young until they are weaned. Males roost alone throughout the Summer. High temperature demands associated with gestation and rearing young may limit the northern range for reproductive females. Eastern red bats often roost amongst live or dead leaves on the branches of live hardwood trees, but have also been found using loblolly pine trees in pine plantations.In late summer, eastern red bats from the northern parts of the range may migrate south for the winter, although little is known about migration routes or overwintering range. In winter, red bats forage for insects on warm nights and even warm days. On warm days during the winter, red bats enter torpor while roosting in the canopy of hardwood or coniferous trees, but during cold bouts they crawl underneath dead leaf litter on the ground and use their furred tail as a blanket.