Chiáu-á sī sio-hoeh, ē pàng-nn̄g ê chek-chui tōng-bu̍t, chú-iàu ê te̍k-teng sī ū ú (feather), ū chò si̍t iōng--ê chêng-pì (forelimb), it-poaⁿ ū khang-sim ê kut-thâu. Chiáu-lūi siōng sè khó-pí kûn-thâu-bú (phang-chhek/hummingbird), siōng toā chhan-chhiūⁿ nâ-kiû kiû-oân (tô-chiáu, Emu) hiah lò.
Chiàu Jacques Gauthier ê gián-kiù, chiáu-lūi ū 4 khoán hō͘-siōng chhiong-tu̍t ê tēng-gī.[1] Chêng 3 hāng sī khah ū būn-tê ê tēng-gī, chia 4 hāng hun-pia̍t sī:
Tē 4 hāng sī chi̍t khoán Gauthier thê-chhut ê hun-lūi tēng-gī:
Ha̍k-kài tùi chiáu-lūi bô goân-choân it-tì ê hun-lūi. Charles Sibley kap Jon Ahlquist (1990 nî) ê Chiáu ê Hūn-lūi kap Hē-thóng-lūn (Phylogeny and Classification of Birds) sī tùi chiáu-lūi hun-lūi ê tiòng-iàu tì-chok.[2] Chiàu it-poaⁿ chèng-kù, in-ê bo̍k sī hông jīn-ûi chèng-khak--ê,[3] chóng--sī bo̍k chi kan ê koan-hē iá koh siū ha̍k-chiá cheng-lūn.
Ē-té sī tùi hiān-tāi chiáu-lūi kun-kù Jarvis, E.D. et al. (2014) tùi 48-ê tāi-piáu bu̍t-chéng ê choân ûi-thoán-thé tēng-sū (whole genome sequencing) gián-kiù[4] kap pō͘-hūn Yury, T. et al. (2013) [5] chū-liāu chè-chō ê chi̍t khoán chhin-oân koan-hē tô͘:
Chiáu PalaeognathaeStruthioniformes (tô-chiáu)
Rheiformes (rheas)
†Dinornithiformes (moas)80 px
Tinamiformes (tinamous)
Casuariiformes (emus & cassowaries)
Apterygiformes (kiwi)
†Aepyornithiformes (chhiūⁿ-chiáu)
Galliformes (chicken, grouse, turkeys, etc.)
Anseriformes (ah, gô, kap thian-gô)
Phoenicopteriformes (flamingos)
Podicipediformes (grebes)
Columbiformes (hún-chiáu kap dodo)
Mesitornithiformes (mesites)
Pteroclidiformes (sandgrouses)
Cypselomorphae (hummingbirds, swifts)
Cuculiformes (cuckoos)
Otidiformes (bustards)
Musophagiformes (turacos)
Opisthocomiformes (hoatzin)
Gruiformes (rails and cranes)
Charadriiformes (gulls, auks, shorebirds, waders)
Aequornithes (loons, khiā-gô, herons, pelicans, storks, etc)
Eurypygiformes (sunbittern, kagu)
Phaethontiformes (tropicbirds)
Cathartiformes (condors and New World vultures)
Accipitriformes (hawks, eagles, Old World vultures etc.)
Strigiformes (owls)
Coliiformes (mousebirds)
Leptosomatiformes (cuckoo roller)
Trogoniformes (trogons)
Bucerotiformes (hornbills, hoopoe and wood hoopoes)
Coraciformes (kingfishers etc.)
Piciformes (woodpeckers, toucans etc.)
Cariamiformes (seriemas, terror birds etc)
Falconiformes (falcons)
Psittaciformes (parrots)
Passeriformes (songbirds and kin)
Chiáu-lūi seng-oa̍h tī tōa-pō͘-hūn ê lio̍k-tē, tí chhit ê tāi-lio̍k lóng ū chûn-chāi, siâng óa lâm-pêng ê chéng-lūi sī Lâm-kek-chiu hióng lōe-lio̍k 440 kong-lí ū cho̍k-kûn ê Pagodroma nivea.[6] Jia̍t-tāi só͘-chāi sī chiáu-lūi ê to-iūⁿ-sèng (biodiversity) siāng hoat-ta̍t ê tē-khu.
Chiáu ê kun-keh cho͘-sêng sī chin khin ê kut-thâu, lāi-bīn hâm ē-táng ji̍p khong-khì, kap ho͘-khip hē-thóng sio chiap ê khang-phāng.[7]
Chiáu-á sī sio-hoeh, ē pàng-nn̄g ê chek-chui tōng-bu̍t, chú-iàu ê te̍k-teng sī ū ú (feather), ū chò si̍t iōng--ê chêng-pì (forelimb), it-poaⁿ ū khang-sim ê kut-thâu. Chiáu-lūi siōng sè khó-pí kûn-thâu-bú (phang-chhek/hummingbird), siōng toā chhan-chhiūⁿ nâ-kiû kiû-oân (tô-chiáu, Emu) hiah lò.