- African Pygmy-Goose
- African Pygmy-Kingfisher
- African Pygmy-goose
- African Pygmy Falcon
- African Pygmy Goose
- African Pygmy Kingfisher
- African Quail
- African Quail-Finch
- African Quailfinch
- African Rail
- African Red-eyed Bulbul
- African Red-winged Starling
- African Reed-Warbler
- African Reed Warbler
- African River-Martin
- African River Martin
- African Rock Martin
- African Rock Pipit
- African Rook
- African Sacred Ibis
- African Sand Martin
- African Scops-Owl
- African Scops Owl
- African Scrub-Robin
- African Scrub-Warbler
- African Scrub Robin
- African Scrub Warbler
- African Sedge Warbler
- African Shrike-flycatcher
- African Shrike Flycatcher
- African Silverbill
- African Skimmer
- African Snipe
- African Spoonbill
- African Spotted-Creeper
- African Spotted Creeper
- African Stonechat
- African Striped Cuckoo
- African Swallow-tailed Kite
- African Swamphen
- African Swift
- African Tailorbird
- African Thrush
- African Thrush-Babbler
- African Thrush Babbler
- African Turtle-Dove
- African Turtle Dove
- African Water Rail
- African Wattled Lapwing
- African White-backed Vulture
- African White-tailed Nightjar
- African White-winged Dove
- African Wood-Owl
- African Wood Owl
- African Wood Pigeon
- African Wryneck
- African Yellow-Warbler
- African Yellow-billed Duck
- African Yellow Warbler
- African Yellow White-eye
- Afropavo
- Afropavo congensis
- Afrotis
- Afrotis afra
- Afrotis afraoides
- Afton State Park
- Afton State Park,(Afton, MN)
- Agadir and the Sous Plain
- Agadir and the Sous Plain (Morocco)
- Agadir and the Sous Plain Morocco
- Agami Heron
- Agamia
- Agamia agami
- Agapornis
- Agapornis cana
- Agapornis canus
- Agapornis fischeri
- Agapornis lilianae
- Agapornis nigrigenis
- Agapornis personatus
- Agapornis pullarius
- Agapornis roseicollis
- Agapornis swindernianus
- Agapornis taranta
- Agelaioides
- Agelaioides badius
- Agelaioides badius fringillarius
- Agelaioides fringillarius
- Agelaioides oreopsar
- Agelaius
- Agelaius assimilis
- Agelaius cyanopus
- Agelaius flavus
- Agelaius humeralis
- Agelaius icterocephalus
- Agelaius phoeniceus
- Agelaius phoeniceus mailliardorum
- Agelaius ruficapillus
- Agelaius thilius
- Agelaius tricolor
- Agelaius xanthomus
- Agelaius xanthomus xanthomus
- Agelaius xanthophthalmus
- Agelastes
- Agelastes meleagrides
- Agelastes niger
- Agelasticus
- Agelasticus cyanopus
- Agelasticus thilius
- Agelasticus xanthophthalmus
- Aggtelek National Park
- Aggtelek National Park (Hungary)
- Aggtelek National Park Hungary
- Agia Reservoir (Crete)
- Agia Reservoir Crete, Greece
- Agia Reservoir Crete (Greece)
- Agile Tit-Tyrant
- Agile Tit Tyrant
- Aglaeactis
- Aglaeactis aliciae
- Aglaeactis castelnaudii
- Aglaeactis cupripennis
- Aglaeactis cupripennis cupripennis
- Aglaeactis pamela
- Aglaeactis regalis
- Aglaiocercus
- Aglaiocercus berlepschi
- Aglaiocercus coelestis
- Aglaiocercus kingi
- Aglaiocercus kingii
- Agraphospiza
- Agraphospiza rubescens
- Agricola
- Agricola infuscatus
- Agricola pallidus
- Agriornis
- Agriornis albicauda
- Agriornis andicola
- Agriornis livida
- Agriornis lividus
- Agriornis microptera
- Agriornis micropterus
- Agriornis montana
- Agriornis montana leucura
- Agriornis montanus
- Agriornis murina
- Agriornis murinus
- Agropsar
- Agropsar philippensis
- Agropsar sturninus
- Aguascalientes
- Aguiguan Reed-Warbler
- Aguiguan Reed Warbler
- Agulhas Lark
- Agulhas Long-billed Lark
- Agyrtria brevirostris
- Agyrtria candida
- Agyrtria cyanocephala
- Agyrtria franciae
- Agyrtria leucogaster
- Agyrtria rondoniae
- Agyrtria versicolor
- Agyrtria violiceps
- Agyrtria viridifrons
- Ahanta Francolin
- Aiguamolls de L'Emporda
- Aiguamolls de L'Emporda Spain
- Aigues Tortes National Park (y Lago de San Mauricio) Spain
- Aigues Tortes National Park and Lake San Mauricio
- Ailsa Craig
- Ailuroedus
- Ailuroedus arfakianus
- Ailuroedus astigmaticus
- Ailuroedus buccoides
- Ailuroedus crassirostris
- Ailuroedus dentirostris
- Ailuroedus geislerorum
- Ailuroedus jobiensis
- Ailuroedus maculosus
- Ailuroedus melanocephalus
- Ailuroedus melanotis
- Ailuroedus stonii
- Aimophila
- Aimophila aestivalis
- Aimophila botterii
- Aimophila carpalis
- Aimophila cassinii
- Aimophila humeralis
- Aimophila mystacalis
- Aimophila notosticta
- Aimophila quinquestriata
- Aimophila rufescens
- Aimophila ruficauda
- Aimophila ruficeps
- Aimophila ruficeps eremoeca
- Aimophila stolzmanni
- Aimophila strigiceps
- Aimophila sumichrasti
- Ain Draham
- Ain Draham Tunisia
- Ainley's Storm-Petrel
- Ainley's Storm Petrel
- Aix
- Aix galericulata
- Aix sponsa
- Ajaia
- Ajaia ajaja
- Ajax Quail-thrush
- Ajax Quail Thrush
- Ajax Scrub-robin
- Akamas Peninsula
- Akamas Peninsula Cyprus
- Akekee
- Akepa
- Akeragh Lough
- Akeragh Lough Ireland
- Akhna Dam
- Akhna Dam Cyprus
- Akialo ellisiana
- Akialoa
- Akialoa ellisiana
- Akialoa lanaiensis
- Akialoa obscura
- Akialoa stejnegeri
- Akiapola'au
- Akiapolaau
- Akikiki
- Akletos
- Akletos goeldii
- Akletos melanoceps
- Akohekohe
- Akrotiri Peninsula (Crete)
- Akrotiri Peninsula Crete, Greece
- Akrotiri Salt Lake
- Akrotiri Salt Lake and surrounding area Cyprus
- Akun Eagle-Owl
- Akun Eagle Owl
- Akun Scops-Owl
- Akun Scops Owl
- Al Ansab Lagoons
- Al Ansab Wetland
- Al Ansab Wetlands
- Ala Shan Redstart
- Alabama
- Alaemon
- Alaemon alaudipes
- Alaemon hamertoni
- Alagoas Antwren
- Alagoas Curassow
- Alagoas Foliage-gleaner
- Alagoas Tyrannulet
- Alala
- Aland Islands
- Aland Islands Finland
- Alaotra Grebe
- Alario
- Alario alario
- Alario leucolaemus
- Alaska
- Alaskan Tit
- Alauda
- Alauda arvensis
- Alauda gulgula
- Alauda japonica
- Alauda leucoptera
- Alauda razae
- Alaudala
- Alaudala athensis
- Alaudala cheleensis
- Alaudala raytal
- Alaudala rufescens
- Alaudala somalica
- Alaudidae
- Albania
- Albatross
- Albatrosses
- Albert's Lyrebird
- Albert Rifle-bird
- Alberta
- Albertine Owlet
- Albertine Rift
- Alborz
- Albufera Marsh
- Albufera Marsh (Mallorca, Balearic Islands)
- Albufera Marsh Mallorca, Balearic Islands, Spain
- Albufereta
- Albufereta (Mallorca, Balearic Islands)
- Albufereta Mallorca, Balearic Islands, Spain.
- Alca
- Alca Torda
- Alca torda
- Alcazar
- Alcedinidae
- Alcedo
- Alcedo Atthis
- Alcedo argentata
- Alcedo atthis
- Alcedo atthis bengalensis
- Alcedo atthis ispida
- Alcedo azurea
- Alcedo coerulescens
- Alcedo cristata
- Alcedo cyanopectus
- Alcedo euryzona
- Alcedo euryzona peninsulae
- Alcedo hercules
- Alcedo leucogaster
- Alcedo meninting
- Alcedo nais
- Alcedo pusilla
- Alcedo quadribrachys
- Alcedo semitorquata
- Alcedo thomensis
- Alcedo vintsioides
- Alcedo websteri
- Alcidae
- Alcippe
- Alcippe brunnea
- Alcippe brunneicauda
- Alcippe castaneceps
- Alcippe chrysotis
- Alcippe cinerea
- Alcippe cinereiceps
- Alcippe danisi
- Alcippe davidi
- Alcippe dubia
- Alcippe formosana
- Alcippe fratercula
- Alcippe grotei
- Alcippe hueti
- Alcippe hueti rufescentior
- Alcippe klossi
- Alcippe ludlowi
- Alcippe manipurensis
- Alcippe morrisonia
- Alcippe nipalensis
- Alcippe peracensis
- Alcippe poioicephala
- Alcippe pyrrhoptera
- Alcippe ruficapilla
- Alcippe rufogularis
- Alcippe striaticollis
- Alcippe variegaticeps
- Alcippe vinipectus
- Alcornocales Natural Park


