- Anglesey
- Angola
- Angola Babbler
- Angola Batis
- Angola Cave-Chat
- Angola Cave Chat
- Angola Cisticola
- Angola Collared-Dove
- Angola Dove
- Angola Glossy Starling
- Angola Helmetshrike
- Angola Lark
- Angola Slaty-Flycatcher
- Angola Slaty Flycatcher
- Angola Swallow
- Angola Swee
- Angola Waxbill
- Angolan Batis
- Angolan Cave Chat
- Angolan Cisticola
- Angolan Lark
- Angolan Pitta
- Angolan Slaty Flycatcher
- Angolan Swallow
- Anguilla
- Angus
- Anhima
- Anhima cornuta
- Anhimidae
- Anhinga
- Anhinga Anhinga
- Anhinga anhinga
- Anhinga anhinga anhinga
- Anhinga melanogaster
- Anhinga novaehollandiae
- Anhinga novaehollandiae novaehollandiae
- Anhinga rufa
- Anhingidae
- Anianiau
- Animal Life at Loudon Pond Community Nature Reserve(Douglas Water, South Lanarkshire)
- Anisognathus
- Anisognathus igniventris
- Anisognathus igniventris erythrotus
- Anisognathus igniventris ignicrissa
- Anisognathus lacrymosus
- Anisognathus melanogenys
- Anisognathus notabilis
- Anisognathus somptuosus
- Anisognathus somptuosus somptuosus
- Anjouan Brush-Warbler
- Anjouan Brush Warbler
- Anjouan Scops-Owl
- Anjouan Scops Owl
- Anjouan Sunbird
- Anjouan White-eye
- Ankasa
- Ankasa-Nini National Park
- Ankasa Conservation Area
- Ankasa Game Reserve
- Ankasa Nature Reserve
- Ankasa Resource Reserve
- Ankober Serin
- Anna's Hummingbird
- Annam Partridge
- Annamudi
- Annandale Water
- Annobon Paradise-Flycatcher
- Annobon Paradise Flycatcher
- Annobon White-eye
- Anodorhynchus
- Anodorhynchus glaucus
- Anodorhynchus hyacinthinus
- Anodorhynchus leari
- Anomalospiza
- Anomalospiza imberbis
- Anopetia
- Anopetia gounellei
- Anorrhinus
- Anorrhinus austeni
- Anorrhinus galeritus
- Anorrhinus tickelli
- Anous
- Anous albivitta
- Anous albivittus
- Anous ceruleus
- Anous minutus
- Anous minutus minutus
- Anous stolidus
- Anous stolidus galapagensis
- Anous stolidus pileatus
- Anous tenuirostris
- Anser
- Anser Anser
- Anser albifrons
- Anser albifrons albifrons
- Anser albifrons flavirostris
- Anser anser
- Anser anser anser
- Anser brachyrhynchus
- Anser caerulescens
- Anser canagicus
- Anser cygnoides
- Anser erythropus
- Anser fabalis
- Anser fabalis middendorffi
- Anser fabalis middendorffii
- Anser indicus
- Anser middendorfii
- Anser rossii
- Anser serrirostris
- Anseranas
- Anseranas semipalmata
- Anseranatidae
- Anseriformes
- Ansorge's Greenbul
- Ant-Tanager
- Ant-eating Chat
- Ant Tanager
- Ant Vireo
- Antarctic
- Antarctic Fulmar
- Antarctic Giant-Petrel
- Antarctic Giant Petrel
- Antarctic Petrel
- Antarctic Prion
- Antarctic Shag
- Antarctic Skua
- Antarctic Tern
- Antarctica
- Antbird
- Anteater Chat
- Anteating Chat
- Antenna Satinbird
- Anthipes
- Anthipes monileger
- Anthipes solitaris
- Anthobaphes
- Anthobaphes violacea
- Anthocephala
- Anthocephala berlepschi
- Anthocephala floriceps
- Anthochaera
- Anthochaera carunculata
- Anthochaera chrysoptera
- Anthochaera lunulata
- Anthochaera paradoxa
- Anthochaera phrygia
- Anthocincla
- Anthocincla phayrei
- Anthony's Nightjar
- Anthornis
- Anthornis melanocephala
- Anthornis melanura
- Anthornis melanura melanura
- Anthoscopus
- Anthoscopus caroli
- Anthoscopus flavifrons
- Anthoscopus minutus
- Anthoscopus musculus
- Anthoscopus parvulus
- Anthoscopus punctifrons
- Anthoscopus sylviella
- Anthracoceros
- Anthracoceros albirostris
- Anthracoceros albirostris convexus
- Anthracoceros coronatus
- Anthracoceros malayanus
- Anthracoceros marchei
- Anthracoceros montani
- Anthracothorax
- Anthracothorax dominicus
- Anthracothorax mango
- Anthracothorax nigricollis
- Anthracothorax prevostii
- Anthracothorax prevostii gracilirostris
- Anthracothorax veraguensis
- Anthracothorax viridigula
- Anthracothorax viridis
- Anthreptes
- Anthreptes anchietae
- Anthreptes aurantium
- Anthreptes aurantius
- Anthreptes axillaris
- Anthreptes collaris
- Anthreptes fraseri
- Anthreptes gabonicus
- Anthreptes griseigularis
- Anthreptes longuemarei
- Anthreptes malacensis
- Anthreptes malacensis borneensis
- Anthreptes metallicus
- Anthreptes neglectus
- Anthreptes orientalis
- Anthreptes pallidigaster
- Anthreptes platurus
- Anthreptes rectirostris
- Anthreptes reichenowi
- Anthreptes rhodolaema
- Anthreptes rhodolaemus
- Anthreptes rubritorques
- Anthreptes seimundi
- Anthreptes simplex
- Anthreptes singalensis
- Anthropoides
- Anthropoides paradisea
- Anthropoides paradiseus
- Anthropoides virgo
- Anthus
- Anthus Richardi
- Anthus antarcticus
- Anthus australis
- Anthus bannermani
- Anthus berthelotii
- Anthus bogotensis
- Anthus brachyurus
- Anthus brevirostris
- Anthus caffer
- Anthus camaroonensis
- Anthus campestris
- Anthus cervinus
- Anthus chacoensis
- Anthus chloris
- Anthus cinnamomeus
- Anthus correndera
- Anthus correndera chilensis
- Anthus correndera grayi
- Anthus crenatus
- Anthus furcatus
- Anthus godlewskii
- Anthus gustavi
- Anthus gutturalis
- Anthus hellmayri
- Anthus hodgsoni
- Anthus hoeschi
- Anthus latistriatus
- Anthus leucophrys
- Anthus lineiventris
- Anthus longicaudatus
- Anthus lutescens
- Anthus melindae
- Anthus nattereri
- Anthus nilghiriensis
- Anthus novaeseelandiae
- Anthus novaeseelandiae aucklandicus
- Anthus novaeseelandiae australis
- Anthus nyassae
- Anthus pallidiventris
- Anthus peruvianus
- Anthus petrosus
- Anthus pratensis
- Anthus pratensis whistleri
- Anthus pseudosimilis
- Anthus richardi
- Anthus roseatus
- Anthus rubescens
- Anthus rubescens japonicus
- Anthus rubescens pacificus
- Anthus rufulus
- Anthus rufulus malayenses
- Anthus sharpei
- Anthus similis
- Anthus sokokensis
- Anthus spinoletta
- Anthus spragueii
- Anthus sylvanus
- Anthus trivialis
- Anthus vaalensis
- Antigone
- Antigone antigone
- Antigone canadensis
- Antigone rubicunda
- Antigone vipio
- Antigua
- Antillean Crested Hummingbird
- Antillean Euphonia
- Antillean Mango
- Antillean Nighthawk
- Antillean Palm-Swift
- Antillean Palm Swift
- Antillean Piculet
- Antillean Siskin
- Antilophia
- Antilophia bokermanni
- Antilophia galeata
- Antioquia Antpitta
- Antioquia Bristle-Tyrant
- Antioquia Bristle Tyrant
- Antioquia Brush-Finch
- Antioquia Brush-finch
- Antioquia Brush Finch
- Antioquia Brushfinch
- Antioquia Wren
- Antipodean Albatross
- Antipodean Wandering Albatross
- Antipodes Island Parakeet
- Antipodes Islands
- Antipodes Parakeet
- Antrostomus arizonae
- Antrostomus badius
- Antrostomus carolinensis
- Antrostomus cubanensis
- Antrostomus ekmani
- Antrostomus longirostris
- Antrostomus noctitherus
- Antrostomus parvulus
- Antrostomus ridgwayi
- Antrostomus roraimae
- Antrostomus rufus
- Antrostomus salvini
- Antrostomus saturatus
- Antrostomus sericocaudatus
- Antrostomus vociferus
- Antvireo
- Anumara
- Anumara forbesi
- Anumbius
- Anumbius annumbi
- Anurolimnas
- Anurolimnas castaneiceps
- Anurolimnas fasciatus
- Anurolimnas viridis
- Anurophasis
- Anurophasis monorthonyx
- Apalharpactes mackloti
- Apalharpactes reinwardtii
- Apalis
- Apalis alticola
- Apalis argentea
- Apalis bamendae
- Apalis binotata
- Apalis chapini
- Apalis chariessa
- Apalis chirindensis
- Apalis cinerea
- Apalis flavida
- Apalis flavida neglecta
- Apalis flavida pugnax
- Apalis flavigularis
- Apalis fuscigularis
- Apalis goslingi
- Apalis jacksoni
- Apalis kaboboensis
- Apalis karamojae
- Apalis lynesi
- Apalis melanocephala


