- American Black Swift
- American Black Vulture
- American Buff-bellied Pipit
- American Bushtit
- American Cliff Swallow
- American Comb Duck
- American Coot
- American Crow
- American Darter
- American Dipper
- American Dusky Flycatcher
- American Flamingo
- American Golden-Plover
- American Golden Plover
- American Goldfinch
- American Gray Flycatcher
- American Grey Flycatcher
- American Herring Gull
- American Kestrel
- American Mountain Thrush
- American Oystercatcher
- American Painted-snipe
- American Painted Snipe
- American Pipit
- American Purple Gallinule
- American Pygmy Kingfisher
- American Redstart
- American Robin
- American Scoter
- American Three-toed Woodpecker
- American Tree Sparrow
- American Treecreeper
- American White-necked Raven
- American White Ibis
- American White Pelican
- American Wigeon
- American Woodcock
- American Yellow Warbler
- Americas
- Amethyst-throated Hummingbird
- Amethyst-throated Mountain-gem
- Amethyst-throated Mountaingem
- Amethyst-throated Sunangel
- Amethyst Brown-Dove
- Amethyst Brown Dove
- Amethyst Dove
- Amethyst Starling
- Amethyst Sunbird
- Amethyst Woodstar
- Ammarnas
- Ammarnas Sweden
- Ammarnäs
- Ammodramus
- Ammodramus aurifrons
- Ammodramus aurifrons apurensis
- Ammodramus bairdii
- Ammodramus caudacutus
- Ammodramus henslowii
- Ammodramus humeralis
- Ammodramus leconteii
- Ammodramus maritimus
- Ammodramus nelsoni
- Ammodramus savannarum
- Ammodramus savannarum perpallidus
- Ammodramus savannarum pratensis
- Ammomanes
- Ammomanes cinctura
- Ammomanes cincturus
- Ammomanes deserti
- Ammomanes grayi
- Ammomanes phoenicura
- Ammomanes phoenicurus
- Ammomanopsis
- Ammomanopsis grayi
- Ammonastes
- Ammonastes pelzelni
- Ammoperdix
- Ammoperdix griseogularis
- Ammoperdix heyi
- Amoromyza samoensis
- Ampeliceps
- Ampeliceps coronatus
- Ampelioides
- Ampelioides tschudii
- Ampelion
- Ampelion rubrocristata
- Ampelion rubrocristatus
- Ampelion rufaxilla
- Ampelion sclateri
- Ampelornis
- Ampelornis griseiceps
- Amphilais
- Amphilais seebohmi
- Amphispiza
- Amphispiza belli
- Amphispiza bilineata
- Amphispiza quinquestriata
- Amsterdam Albatross
- Amsterdam Island Albatross
- Amsterdam Island Wigeon
- Amur Falcon
- Amur Paradise-Flycatcher
- Amur Paradise Flycatcher
- Amur Wagtail
- Amytornis
- Amytornis ballarae
- Amytornis barbatus
- Amytornis dorotheae
- Amytornis goyderi
- Amytornis housei
- Amytornis merrotsyi
- Amytornis modestus
- Amytornis oweni
- Amytornis purnelli
- Amytornis rowleyi
- Amytornis striatus
- Amytornis striatus striatus
- Amytornis textilis
- Amytornis textilis myall
- Amytornis textilis textilis
- Amytornis whitei
- Amytornis woodwardi
- Anabacerthia
- Anabacerthia amaurotis
- Anabacerthia lichtensteini
- Anabacerthia ruficaudata
- Anabacerthia striaticollis
- Anabacerthia variegaticeps
- Anabathmis
- Anabathmis hartlaubii
- Anabathmis newtonii
- Anabathmis reichenbachii
- Anabazenops
- Anabazenops dorsalis
- Anabazenops fuscus
- Anahuac N.W.R., Texas(Texas)
- Anahuac NWR
- Anahuac National Wildlife Refuge
- Anairetes
- Anairetes agilis
- Anairetes alpinus
- Anairetes fernandezianus
- Anairetes flavirostris
- Anairetes nigrocristatus
- Anairetes parulus
- Anairetes parulus parulus
- Anairetes reguloides
- Analisoma
- Analisoma analis
- Analisoma coerulescens
- Analisoma ostenta
- Anambra Waxbill
- Anaplectes
- Anaplectes rubriceps
- Anarhynchus
- Anarhynchus frontalis
- Anas
- Anas Cyanoptera
- Anas Puna
- Anas acuta
- Anas albogularis
- Anas altipetens
- Anas americana
- Anas andium
- Anas aucklandica
- Anas bahamensis
- Anas bahamensis bahamensis
- Anas bahamensis galapagensis
- Anas bernieri
- Anas capensis
- Anas carolinensis
- Anas castanea
- Anas chlorotis
- Anas clypeata
- Anas crecca
- Anas crecca crecca
- Anas cyanoptera
- Anas cyanoptera cyanoptera
- Anas cyanoptera septentrionalium
- Anas diazi
- Anas discors
- Anas eatoni
- Anas erythrorhyncha
- Anas falcata
- Anas flavirostris
- Anas formosa
- Anas fulvigula
- Anas georgica
- Anas gibberifrons
- Anas gracilis
- Anas hottentota
- Anas laysanensis
- Anas luzonica
- Anas marecula
- Anas melleri
- Anas nesiotis
- Anas penelope
- Anas platalea
- Anas platyrhynchos
- Anas platyrhynchos domesticus
- Anas platyrhynchos platyrhynchos
- Anas poecilorhyncha
- Anas poecilorhyncha haringtoni
- Anas poecilorhyncha zonorhyncha
- Anas puna
- Anas querquedula
- Anas rhynchotis
- Anas rhyncotis
- Anas rubripes
- Anas sibilatrix
- Anas smithii
- Anas sparsa
- Anas specularioides
- Anas specularis
- Anas strepera
- Anas superciliosa
- Anas superciliosa superciliosa
- Anas undulata
- Anas versicolor
- Anas wyvilliana
- Anas zonorhyncha
- Anastomus
- Anastomus lamelligerus
- Anastomus oscitans
- Anatidae
- Ancash Tapaculo
- Anchieta's Barbet
- Anchieta's Sunbird
- Anchieta's Tchagra
- Ancient Antwren
- Ancient Murrelet
- Ancistrops
- Ancistrops strigilatus
- Andalusian Hemipode
- Andaman Barn Owl
- Andaman Black Woodpecker
- Andaman Boobook
- Andaman Bulbul
- Andaman Coucal
- Andaman Crake
- Andaman Cuckoo-Dove
- Andaman Cuckoo-shrike
- Andaman Cuckoo Dove
- Andaman Cuckooshrike
- Andaman Drongo
- Andaman Flowerpecker
- Andaman Green-Pigeon
- Andaman Green Pigeon
- Andaman Grey-rumped Swiftlet
- Andaman Hawk-Owl
- Andaman Hawk Owl
- Andaman Islands
- Andaman Masked-Owl
- Andaman Masked Owl
- Andaman Nightjar
- Andaman Scops-Owl
- Andaman Scops Owl
- Andaman Serpent-Eagle
- Andaman Serpent Eagle
- Andaman Shama
- Andaman Teal
- Andaman Treepie
- Andaman White-headed Starling
- Andaman Wood-Pigeon
- Andaman Wood Pigeon
- Andaman Woodpecker
- Andaman and Nicobar Islands
- Andamans
- Andean Avocet
- Andean Blossomcrown
- Andean Boulder-finch
- Andean Cock-of-the-Rock
- Andean Cock-of-the-rock
- Andean Cock Of The Rock
- Andean Cock of the Rock
- Andean Condor
- Andean Coot
- Andean Duck
- Andean Emerald
- Andean Flamingo
- Andean Flicker
- Andean Goose
- Andean Guan
- Andean Gull
- Andean Hillstar
- Andean Ibis
- Andean Laniisoma
- Andean Lapwing
- Andean Motmot
- Andean Negrito
- Andean Parakeet
- Andean Potoo
- Andean Pygmy-Owl
- Andean Pygmy Owl
- Andean Siskin
- Andean Slaty-Thrush
- Andean Slaty Thrush
- Andean Snipe
- Andean Solitaire
- Andean Swallow
- Andean Swift
- Andean Tapaculo
- Andean Teal
- Andean Tinamou
- Andean Tit-Spinetail
- Andean Tit Spinetail
- Andean Toucanet
- Andean Tyrant
- Anderladen National Park
- Anderladen National Park Sweden
- Andigena
- Andigena cucullata
- Andigena hypoglauca
- Andigena laminirostris
- Andigena nigrirostris
- Andinioti Lagoon (Corfu)
- Andinioti Lagoon Corfu, Greece
- Andorra
- Androdon
- Androdon aequatorialis
- Andropadus
- Andropadus ansorgei
- Andropadus chlorigula
- Andropadus curvirostris
- Andropadus fusciceps
- Andropadus gracilirostris
- Andropadus gracilis
- Andropadus hallae
- Andropadus importunus
- Andropadus importunus importunus
- Andropadus kakamegae
- Andropadus latirostris
- Andropadus masukuensis
- Andropadus milanjensis
- Andropadus montanus
- Andropadus nigriceps
- Andropadus olivaceiceps
- Andropadus tephrolaemus
- Andropadus virens
- Androphobus
- Androphobus viridis
- Angarn
- Angarn lake
- Angelina's Scops-owl
- Angelina's Scops Owl


