- Alcornocales Natural Park, Cadiz, Spain
- Aldabra Brush-Warbler
- Aldabra Brush Warbler
- Aldabra Drongo
- Aldabra Fody
- Aldabra Kestrel
- Aldabra Rail
- Aldabra White-eye
- Alder Flycatcher
- Alderney
- Aleadryas
- Aleadryas rufinucha
- Alectoris
- Alectoris barbara
- Alectoris chukar
- Alectoris graeca
- Alectoris graeca saxatilis
- Alectoris graeca whitakeri
- Alectoris magna
- Alectoris melanocephala
- Alectoris philbyi
- Alectoris rufa
- Alectoris whitakeri
- Alectroenas
- Alectroenas madagascariensis
- Alectroenas nitidissima
- Alectroenas nitidissimus
- Alectroenas pulcherrima
- Alectroenas pulcherrimus
- Alectroenas sganzini
- Alectrurus
- Alectrurus risora
- Alectrurus tricolor
- Alectura
- Alectura lathami
- Alethe
- Alethe castanea
- Alethe choloensis
- Alethe diademata
- Alethe fuelleborni
- Alethe poliocephala
- Alethe poliophrys
- Aletschwald
- Aletschwald (Switzerland)
- Aleutian Islands
- Aleutian Tern
- Aleutians
- Alexander's Akalat
- Alexander's Swift
- Alexandra's Parrot
- Alexandrine Parakeet
- Alfaro's Hummingbird
- Alfaros Hummingbird
- Algaiarens
- Algaiarens (Menorca, Balearic Islands)
- Algaiarens Menorca, Balearic Islands, Spain
- Algendar Gorge
- Algendar Gorge (Menorca, Balearic Islands)
- Algendar Gorge Menorca, Balearic Islands, Spain
- Algeria
- Algerian Nuthatch
- Algerian Woodpecker
- Alipiopsitta xanthops
- Alisterus
- Alisterus amboinensis
- Alisterus chloropterus
- Alisterus scapularis
- Alle
- Alle alle
- Allean Forest
- Allekvia Ang (Gotland)
- Allekvia ang Gotland, Sweden
- Allen's Gallinule
- Allen's Hummingbird
- Allendale Celery Farm
- Allenia
- Allenia fuscus
- Allied Broadbill
- Allied Honeyeater
- Allied Manucode
- Allied Monarch
- Allied Rufous Treecreeper
- Allied Treecreeper
- Allkvie änge (Gotland)
- Allpahuayo Antbird
- Alopecoenas
- Alopecoenas beccarii
- Alopecoenas erythropterus
- Alopecoenas ferrugineus
- Alopecoenas hoedtii
- Alopecoenas jobiensis
- Alopecoenas kubaryi
- Alopecoenas norfolkensis
- Alopecoenas rubescens
- Alopecoenas salamonis
- Alopecoenas sanctaecrucis
- Alopecoenas stairi
- Alopecoenas xanthonurus
- Alophoixus
- Alophoixus affinis
- Alophoixus aureus
- Alophoixus bres
- Alophoixus chloris
- Alophoixus finschii
- Alophoixus flaveolus
- Alophoixus frater
- Alophoixus longirostris
- Alophoixus lucasi
- Alophoixus mystacalis
- Alophoixus ochraceus
- Alophoixus pallidus
- Alophoixus pallidus henrici
- Alophoixus phaeocephalus
- Alophoixus platenae
- Alopochelidon
- Alopochelidon fucata
- Alopochen
- Alopochen aegyptiaca
- Alopochen aegyptiacus
- Alopochen kervazoi
- Alopochen mauritiana
- Alor White-eye
- Alpine Accentor
- Alpine Chat
- Alpine Chough
- Alpine Leaf-Warbler
- Alpine Leaf Warbler
- Alpine Mannikin
- Alpine Munia
- Alpine Pipit
- Alpine Robin
- Alpine Rock Wren
- Alpine Swift
- Alpine Thrush
- Alps
- Alta Floresta Antpitta
- Altai Accentor
- Altai Snowcock
- Altamira Oriole
- Altamira Yellowthroat
- Alto Pisones Tapaculo
- Altos de Campana National Park
- Altos de Campana National Park-Cloud Forest(Central Panama)
- Altos de Lircay
- Altos de Lircay National Reserve
- Altos de Vilches
- Amadina
- Amadina erythrocephala
- Amadina fasciata
- Amadina fasciata contigua
- Amadonastur lacernulatus
- Amakihi
- Amalocichla
- Amalocichla incerta
- Amalocichla sclateriana
- Amami Jay
- Amami Thrush
- Amami Woodcock
- Amandava
- Amandava amandava
- Amandava formosa
- Amandava subflava
- Amandava subflava clarkei
- Amani Sunbird
- Amaui
- Amaurocichla
- Amaurocichla bocagei
- Amaurocichla bocagii
- Amaurolimnas
- Amaurolimnas concolor
- Amaurornis
- Amaurornis akool
- Amaurornis bicolor
- Amaurornis cinerea
- Amaurornis flavirostra
- Amaurornis flavirostris
- Amaurornis isabellina
- Amaurornis isabellinus
- Amaurornis magnirostris
- Amaurornis marginalis
- Amaurornis moluccana
- Amaurornis olivacea
- Amaurornis olivieri
- Amaurornis phoenicurus
- Amaurospiza
- Amaurospiza aequatorialis
- Amaurospiza carrizalensis
- Amaurospiza concolor
- Amaurospiza moesta
- Amaurospiza relicta
- Amazilia
- Amazilia Hummingbird
- Amazilia alticola
- Amazilia amabilis
- Amazilia amazilia
- Amazilia amazilia dumerlii
- Amazilia beryllina
- Amazilia boucardi
- Amazilia brevirostris
- Amazilia brevirostris chionopectus
- Amazilia candida
- Amazilia castaneiventris
- Amazilia chionogaster
- Amazilia chionopectus
- Amazilia chionopectus chionopectus.
- Amazilia cupreicauda
- Amazilia cyanifrons
- Amazilia cyanocephala
- Amazilia cyanocephala cyanocephala
- Amazilia decora
- Amazilia edward
- Amazilia fimbriata
- Amazilia franciae
- Amazilia hoffmanni
- Amazilia lactea
- Amazilia lactea lactea
- Amazilia leucogaster
- Amazilia luciae
- Amazilia rondoniae
- Amazilia rosenbergi
- Amazilia rutila
- Amazilia rutila corallirostris
- Amazilia saucerottei
- Amazilia saucerrottei
- Amazilia saucerrottei hoffmanni
- Amazilia sophiae
- Amazilia tobaci
- Amazilia tobaci caudata
- Amazilia tobaci erythronotus
- Amazilia tzacatl
- Amazilia tzacatl jucunda
- Amazilia tzacatl tzacatl
- Amazilia versicolor
- Amazilia violiceps
- Amazilia viridicauda
- Amazilia viridifrons
- Amazilia viridigaster
- Amazilia wagneri
- Amazilia yucatanensis
- Amazon Kingfisher
- Amazona
- Amazona aestiva
- Amazona agilis
- Amazona albifrons
- Amazona albifrons nana
- Amazona amazonica
- Amazona arausiaca
- Amazona auropalliata
- Amazona autumnalis
- Amazona autumnalis autumnalis
- Amazona autumnalis salvini
- Amazona barbadensis
- Amazona brasiliensis
- Amazona collaria
- Amazona diadema
- Amazona dufresniana
- Amazona farinosa
- Amazona farinosa inornata
- Amazona festiva
- Amazona festiva festiva
- Amazona finschi
- Amazona guatemalae
- Amazona guildingii
- Amazona imperialis
- Amazona kawalli
- Amazona leucocephala
- Amazona leucocephala leucocephala
- Amazona mercenaria
- Amazona mercenarius
- Amazona ochrocephala
- Amazona ochrocephala nattereri
- Amazona ochrocephala ochrocephala
- Amazona oratrix
- Amazona pretrei
- Amazona rhodocorytha
- Amazona tresmariae
- Amazona tucumana
- Amazona ventralis
- Amazona versicolor
- Amazona vinacea
- Amazona viridigenalis
- Amazona vittata
- Amazona xantholora
- Amazona xanthops
- Amazonas Antbird
- Amazonetta
- Amazonetta brasiliensis
- Amazonian Antpitta
- Amazonian Antshrike
- Amazonian Barred-Woodcreeper
- Amazonian Barred Woodcreeper
- Amazonian Black-Tyrant
- Amazonian Black Tyrant
- Amazonian Inezia
- Amazonian Motmot
- Amazonian Oropendola
- Amazonian Parrotlet
- Amazonian Pygmy-Owl
- Amazonian Pygmy Owl
- Amazonian Royal Flycatcher
- Amazonian Scrub-Flycatcher
- Amazonian Scrub Flycatcher
- Amazonian Streaked-Antwren
- Amazonian Streaked Antwren
- Amazonian Swift
- Amazonian Trogon
- Amazonian Tyrannulet
- Amazonian Umbrellabird
- Amazonian Violaceous Trogon
- Amazonian White-tailed Trogon
- Amazonian or Todd's Scrub Flycatcher
- Ambaji-Balaram Wildlife Sanctuary
- Amber Mountain Rock-Thrush
- Amber Mountain Rock Thrush
- Amblycercus
- Amblycercus holosericeus
- Amblyornis
- Amblyornis flavifrons
- Amblyornis germana
- Amblyornis inornata
- Amblyornis inornatus
- Amblyornis macgregoriae
- Amblyornis newtoniana
- Amblyornis newtonianus
- Amblyornis subalaris
- Amblyospiza
- Amblyospiza albifrons
- Amblyramphus holosericeus
- Amboina Cuckoo-Dove
- Amboina Cuckoo Dove
- Amboina White-eye
- Ambon
- Ambon Honeyeater
- Ambon White-eye
- Ambon Yellow White-eye
- Amboyna Cuckoo-Dove
- Amboyna Cuckoo Dove
- Ameline Swiftlet
- America
- American Avocet
- American Bare-eyed Thrush
- American Barn Owl
- American Bittern
- American Black-billed Magpie
- American Black Duck


