Rare Bird Species - Hybrids Treated as Species

Acestrura decorata (Acestrura heliodor x Acestrura mulsant)

Acestrura harterti (a single known specimen, now deemed of probable hybrid origin, were the basis of this taxon, which has been described as a rare bird species)

Acrocephalus cinnamomeus (Acrocephalus baeticus x Acrocephalus scirpaceus)

Aglaeactis castelnaudi (possibly Aglaeactis cupripennis x Aglaeactis pamela)

Amazilia bangsi (Amazilia rutila x Amazilia tzacatl)

Amazilia cyaneotincta (Two specimens, now deemed a probable hybrid, are the basis of this taxon, an allegedly rare bird species)

Amazilia distans (Amazilia fimbriata x Hylocharis cyanus)

Amazilia neglecta (Amazilia versicolor x Hylocharis cyanus)

Anabacerthia temporalis (Anabacerthia stratiacollis x Anabacerthia variegaticeps)

Anas breweri (Anas platyrhynchos x Anas strepera)

Anas maxima (Anas rubripes x Cairina moschata)

Anas meroïdes (Bucephala clangula x Lophodytes cucullatus)

Anas oustaleti (Anas platyrhynchos x Anas superciliosa)

Archilochus violajugulum (Archilochus alexandri x Calypte anna)

Ardea wurdemannii (Ardea herodias x Ardea occidentalis)

Aythya affinis (?? Aythya ferina x Aythya marila; the Lesser Scaup, Aythya affinis, closely resembles this hybrid)

Calidris cooperi (this supposedly rare bird species is probably based on birds derived from the cross Calidris acuminata x Calidris ferruginea)

Calidris paramelanotos (Calidris ferruginea x Calidris melanotos)

Callipepla leucoproson (Callipepla douglasii x Callipepla gambelii)

Calliphlox iridescens (Calliphlox amethystina x Chlorostilbon aureoventris)

Camarhynchus aureus (Camarhynchus parvulus x Certhidea olivacea)

Camarhynchus conjunctus (Camarhynchus parvulus x Certhidea olivacea)

Camarhynchus giffordi (Camarhynchus pallidus x Certhidea olivacea)

Caprimulgus ruwenzorii (this supposedly rare bird species is probably based on birds derived from the cross Caprimulgus guttifer x Caprimulgus poliocephalus)

Carduelis ambigua (? intermediate in morphology and range between Carduelis sinica and Carduelis spinoides, which in captivity produce hybrids that are similar to C. ambigua)

Celeus roosevelti (Celeus elegans x Celeus lugubris)

Chalcostigma purpureicauda (Aglaiocercus kingi x Lesbia victoriae)

Chlorophanes purpurascens (Chlorophanes spiza x Cyanerpes cyaneus or Chlorophanes spiza x Dacnis cayana)

Chlorospringus tacarcunae (this alleged rare bird species is often treated as a race of either Chlorospringus flavigularis or Chlorospringus opthalmicus; this history of treatment suggests C. tacarcunae is derived from hybridization between C. flavigularis and C. opthalmicus)

Chrysolampis chlorolaemus (Anthracothorax nigricollis x Chrysolampis mosquitus)

Cicinnurus goodfellowi (Cicinnurus magnificus x Cicinnurus regius)

Cicinnurus lyogyrus (Cicinnurus magnificus x Cicinnurus regius)

Clangula angustirostris (Bucephala clangula x Lophodytes cucullatus)

Coeligena lawrencei (Coeligena torquata x Lafresnaya lafresnayi)

Coeligena purpurea (this alleged rare bird species is probably based on birds derived from the cross Coeligena coeligena x Coeligena prunellei)

Coeligena travesii (A few specimens, probably derived from the cross Coeligena lutetiae x Coeligena torquata, are the basis of this taxon, which has been described as a rare bird species)

Colaptes ayresi (Colaptes auratus x Colaptes cafer)

Colaptes hybridus (Colaptes auratus x Colaptes cafer)

Columba chiriquensis (Columba nirirostris x Columba subvinacea)

Corvus edithae (Corvus albus x Corvus ruficollis)

Cossypha albigularis (this alleged rare bird species is intermediate in morphology and range between Cossypha anomala and Cossypha mbuluensis and is thus a probable hybrid of the two)

Craspedophora bruyni (Ptiloris magnificus x Seleucidis melanoleuca)

Crax estudilloi (Crax sp. x Crax fasciolata or Crax alberti sp. x Crax rubra)

Crax viridirostris (Crax sp. x Crax fasciolata or Crax alberti sp. x Crax rubra)

Dicrurus andamanensis (this alleged rare bird species is based on birds that are probably derived from the cross Dicrurus hottentottus x Dicrurus paradiseus)

Diglossa gloriosa (probably derived from the cross Diglossa brunneiventris x Diglossa humeralis)

Diphyllodes gulielmi (this supposedly rare bird species is based on birds that are probably derived from the cross Cicinnurus magnificus x Cicinnurus regius)

Eriocnemis isaacsonii (perhaps Eriocnemis sp. x Heliangelus sp.)

Estrilda rufibarba (this alleged rare bird species is based on birds that are probably derived from the cross Estrilda rhodopyga x Estrilda troglodytes)

Eucephala hypocyanea (probably Chlorestes notatus x Hylocharis cyanus)

Eucephala scapulata (Chlorestes notatus x Thalurania furcata)

Eucephala smaragdocaerulea (Chlorestes notatus x Thalurania glaucopis)

Euphonia vittata (Euphonia pectoralis x Euphonia xanthogaster)

Ficedula semitorquata (poss. Ficedula albicollis x Ficedula hyoleuca; F. semitorquata is morphologically intermediate)

Francolinus ochropectus (Francolinus castaneicollis x Francolinus erckelii; this hybrid was treated as an endangered species)

Francolinus schlegelii (? this bird is intermediate between Francolinus albogularis and Francolinus coqui in both morphology and range and is thus a probable hybrid of the two. It has been described as a rare bird species.)

Fuligula ferinoides (Aythya ferina x Aythya nyroca)

Fuligula homeyeri (Aythya ferina x Aythya nyroca)

Fuligula marloides (Aythya ferina x Aythya marila)

Gennaeus imperialis (Lophura edwardsi x Lophura nycthemera; this hybrid was treated as an endangered species under the name Lophura imperialis)

Geospiza darwini (probably Geospiza conirostris x Geospiza magnirostris)

Grus nigricollis (perhaps Grus japonensis x Grus vipio)

Heliangelus luminosus (Eriocnemis sp. x Heliangelus sp. or Heliangelus sp. x Ramphomicron microrhynchum)

Heliangelus rothschildi (Eriocnemis sp. x Heliangelus sp. or Heliangelus sp. x Ramphomicron microrhynchum)

Heliangelus speciosus (Eriocnemis sp. x Heliangelus sp. or Heliangelus sp. x Ramphomicron microrhynchum)

Heliangelus squamigularis (probably Eriocnemis cupreoventris x Heliangelus amethysticollis)

Heliangelus zusii (Six specimens, probable hybrids of unknown parentage, are the basis of this taxon, an alleged rare bird species)

Heliotrypha barralli (probably Eriocnemis cupreoventris x Heliangelus amethysticollis)

Heliotrypha speciosa (probably Eriocnemis cupreoventris x Heliangelus amethysticollis)

Helminthophaga cincinnatiensis (Oporornis formosus x Vermivora pinus)

Heterocercus luteocephalus (based on a single lost specimen, now thought to be a hybrid involving the genus Neopelma, is the basis of this taxon, an alleged rare bird species)

Heteroptilorhis mantoui (Ptiloris magnificus x Seleucidis melanoleuca)

Homophania lawrencei (this supposed rare bird species is based on birds that are probably derived from the cross Coeligena torquata x Lafresnaya lafresnayi)

Hylocharis pyropygia (probably Chlorostilbon aureoventris x Hylocharis cyanus)

Janthothorax bensbachi (Paradisaea minor x Ptiloris magnificus)

Janthothorax mirabilis (Paradisaea minor x Seleucidis melanoleuca)

Lanius bogdanowi (Lanius collurio x Lanius isabellinus)

Lanius darwinii (Lanius collurio x Lanius isabellinus)

Lanius dichourus (Lanius collurio x Lanius cristatus)

Lanius raddei (Lanius collurio x Lanius isabellinus)

Lamprothorax wilhelminae (Cicinnurus magnificus x Lophorina superba)

Lesbia eucharis (Lesbia nuna x Lesbia victoriae)

Lesbia ortoni (Lesbia magnificus x Rhamphomicron microrhynchum)

Leucochloris malvina (Chlorostilbon aureoventris x Leucochloris albicollis)

Loborhampus nobilis (Lophorina superba x Paradigalla carunculata)

Loborhampus ptilorhis (this supposedly rare bird species is based on birds that are probably derived from the cross Paradigalla carunculata x Parotia sefilata)

Lonchura pallidiventer (Lonchura ferruginosa x Lonchura quinticolor)

Lophornis insignibarbus (Lophornis chalybeus x Lophornis stictolophus)

Lophura imperialis (Lophura edwardsi x Lophura nycthemera; this hybrid was treated as an endangered species)

Lophura hatinhensis (probably Lophura edwardsi x Lophura nycthemera)

Manacus cerritus (Manacus aurantiacus x Manacus candei)

Mergus anatarius (Bucephala clangula x Lophodytes cucullatus)

Motacilla subpersonata (poss. Motacilla aguimp x Motacilla alba)

Muscicapa lendu (poss. Muscicapa aquatica x Muscicapa olivascens)

Myadestes coloratus (probably Myadestes melanops x Myadestes ralloides)

Nectarinia moreaui (probably Nectarinia loveridgei x Nectarinia mediocris)

Nectarinia ousteleti (probably Nectarinia bouvieri x Nectarinia talatala)

Nectarinia prigoginei (probably Nectarinia mediocris x Nectarinia stuhlmani)

Neolesbia nehrkorni (Aglaiocercus kingi x Ramphomicron microrhynchum or Aglaiocercus kingi x Thalurania sp.)

Neoparadisaea ruysi (Cicinnurus magnificus x Paradisaea minor)

Oriolus percivali (probably Oriolus larvatus x Oriolus nigripennis)

Oryzoborus atrirostris (probably Oryzoborus crassirostris x Oryzoborus maximiliani)

Oryzoborus nuttingi (probably Oryzoborus crassirostris x Oryzoborus maximiliani)

Paradisaea bloodi (Paradisaea raggiana x Paradisaea rudolphi)

Paradisaea mirabilis (Paradisaea minor x Seleucidis melanoleuca)

Paradisaea mixta (Paradisaea minor x Paradisaea raggiana)

Pardalotus ornatus (probably Pardalotus striatus x Pardalotus substriatus)

Parotia duivenbodei (Lophorina superba x Parotia sefilata)

Parus pleskei (Parus caeruleus x Parus cyanus)

Paryphephorus duivenbodei (Lophorina superba x Parotia sefilata)

Passer italiae (Passer domestica x Passer hispaniolensis)

Perdix labatici (Alectoris graeca x Alectoris rufa)

Phlegopsis barringeri (Phlegopsis erythroptera x Phlegopsis nigromaculata)

Pipra anomala (Heterocercus linteatus x Pipra aureola)

Pipra heterocerca (Pipra aureola x Pipra filicauda or Pipra fasciicauda x Pipra filicauda)

Platycercus adelaidae (Platycercus elegans x Platycercus flaveolus)

Platycercus erythropterus (Platycercus elegans x Platycercus eximius)

Platycercus macgillivrayi (probably Platycercus barnardi x Platycercus zonarius)

Ploceus intermedius (probably Ploceus luteolus x Ploceus melanocephalus)

Ploceus ruweti (perhaps a hybrid involving Ploceus reichardi)

Ploceus victoriae (Ploceus castanops x Ploceus melanocephalus)

Psaltriparus lloydi (Psaltriparus malanotis x Psaltriparus plumbeus)

Pseudastrapia lobata (probably Epimachus fastuosus x Paradigalla carunculata)

Pternistes cooperi (Francolinus afer x Francolinus swainsonii)

Pteroglossus ollalae (Pteroglossus afer x Pteroglossus mariae)

Ptilonorhynchus rawnsleyi (Ptilonorhynchus violaceous x Sericulus chrysocephalus)

Ptochoptera iolaima (perhaps Chlorostilbon alice x Chlorostilbon poortmani)

Pycnonotus nieuwenhuisii (probably Pycnonotus atriceps x Pycnonotus cyaniventris)

Quiscalus stonei (Quiscalus quiscula x Quiscalus versicolor)

Ramphocelus chrysonotus (Ramphocelus flammigerus x Ramphocelus icteronotus)

Ramphocelus dunstalli (Ramphocelus dimidiatus x Ramphocelus icteronotus)

Ramphocelus inexspectata (Ramphocelus dimidiatus x Ramphocelus icteronotus)

Ramphocelus festae (probably Ramphocelus dimidiatus x Ramphocelus passerinii)

Rhipidornis gulielmi (Cicinnurus magnificus x Cicinnurus regius)

Selasphorus floresii (Calyte anna x Selasphorus sasin)

Selasphorus underwoodi (Selasphorus flammula x Selasphorus scintilla)

Serinus citrinipectus (Serinus atrogularis x Serinus mozambicus)

Serinus flavigula (Serinus dorsostriatus x Serinus reichenowi or Serinus dorsostriatus x Serinus xanthopygius)

Smaragdochrysis (Calliphlox amethystina x Chlorostilbon aureoventris; a hybrid specimen was the type of this genus)

Spiza townsendii (perhaps Guiraca caerulea x Spiza americana)

Spizella taverni (perhaps Spizella breweri x Spizella pallida)

Sporophila insulata (probably Sporophila minuta x Sporophila telasco)

Sporophila zelichi (perhaps Sporophila cinnamomea x Sporophila palustris)

Tangara arnaulti (Tangara cayana x Tangara preciosa)

Tangara gouldi (Tangara cyanoventris x Tangara desmaresti)

Terpsiphone emini (Terpsiphone rufiventer x Terpsiphone viridris)

Terpsiphone rufiventer (probably Terpsiphone tricolor x Terpsiphone viridris)

Tetrao hybridus (Tetrao tetrix x Tetrao urogallus)

Tetrao lagopoides (Lagopus lagopus x Tetrao tetrix)

Tetrao medius (Tetrao tetrix x Tetrao urogallus)

Thalurania lerchi (Chrysuronia oenone x Thalurania furcata)

Todirhamphus miyakoensis (probably Todirhamphus chloris x Todirhamphus cinnamominus)

Trochilus violajugulum (Archilochus alexandri x Calypte anna)

Turdoides hindei (probably Turdoides hypoleucus x Turdoides jardineii)

Tyrannus apolites (Empidonomus varius x Tyrannus melancholicus)

Vermivora lawrencei (Vermivora chrysoptera x Vermivora pinus)

Vermivora leucobronchialis (Vermivora chrysoptera x Vermivora pinus)

Vireo propinquus (Vireo flavifrons x Vireo solitarius)

Vireosylvia propinqua (Vireo flavifrons x Vireo solitarius)

Xiphorhynchus insignis (probably Xiphorhynchus elegans x Xiphorhynchus spixii)

Xiphorhynchus juruanus (probably Xiphorhynchus elegans x Xiphorhynchus spixii)

Zodalia glyceria (probably Chalcostigma herrani x Lesbia victoriae)

Zodalia thaumasta (Aglaiocercus kingi x Lesbia victoriae)

Zosterops tephropleurus (perhaps Zosterops lateralis x Zosterops tenuirostris)