- Alectrurus tricolor (Cock-tailed Tyrant)
- Alethe choloensis (Cholo Alethe)
- Alethe choloensis choloensis
- Alethe choloensis namuli
- Alethe diademata (Fire-crested Alethe)
- Alethe diademata castanea
- Alethe diademata diademata
- Alethe diademata woosnami
- Alethe fuelleborni (White-chested Alethe)
- Alethe poliocephala (Brown-chested Alethe)
- Alethe poliocephala carruthersi
- Alethe poliocephala hallae
- Alethe poliocephala nandensis
- Alethe poliocephala poliocephala
- Alethe poliophrys (Red-throated Alethe)
- Alethe poliophrys kaboboensis
- Alethe poliophrys poliophrys
- Allenia fusca (Scaly-breasted Thrasher)
- Allenia fusca atlantica
- Allenia fusca fusca
- Alophoixus affinis (Golden Bulbul)
- Alophoixus affinis affinis
- Alophoixus affinis aureus
- Alophoixus affinis chloris
- Alophoixus affinis harterti
- Alophoixus affinis longirostris
- Alophoixus affinis mystacalis
- Alophoixus affinis platenae
- Alophoixus bres (Gray-cheeked Bulbul)
- Alophoixus bres bres
- Alophoixus bres frater
- Alophoixus bres gutturalis
- Alophoixus finschii (Finsch’s Bulbul)
- Alophoixus flaveolus (White-throated Bulbul)
- Alophoixus flaveolus burmanicus
- Alophoixus flaveolus flaveolus
- Alophoixus ochraceus (Ochraceous Bulbul)
- Alophoixus ochraceus hallae
- Alophoixus ochraceus ochraceus
- Alophoixus ochraceus sordidus
- Alophoixus ochraceus sumatranus
- Alophoixus pallidus (Puff-throated Bulbul)
- Alophoixus pallidus annamensis
- Alophoixus pallidus griseiceps
- Alophoixus pallidus henrici
- Alophoixus pallidus pallidus
- Alophoixus pallidus robinsoni
- Alophoixus phaeocephalus (Yellow-bellied Bulbul)
- Alophoixus phaeocephalus diardi
- Alophoixus phaeocephalus phaeocephalus
- Alophoixus phaeocephalus sulphuratus
- Alopochelidon fucata (Tawny-headed Swallow)
- Amadina erythrocephala (Red-headed Finch)
- Amadina erythrocephala dissita
- Amadina erythrocephala erythrocephala
- Amadina fasciata (Cut-throat)
- Amadina fasciata alexanderi
- Amadina fasciata fasciata
- Amadina fasciata meridionalis
- Amalocichla incerta (Lesser Ground-Robin)
- Amalocichla incerta brevicauda
- Amalocichla incerta incerta
- Amalocichla sclateriana (Greater Ground-Robin)
- Amalocichla sclateriana occidentalis
- Amalocichla sclateriana sclateriana
- Amandava amandava (Red Avadavat)
- Amandava amandava amandava
- Amandava amandava flavidiventris
- Amandava amandava punicea
- Amaurocichla bocagei (Bocage’s Longbill)
- Amaurospiza carrizalensis (Carrizal Seedeater)
- Amaurospiza concolor (Blue Seedeater)
- Amaurospiza concolor aequatorialis
- Amaurospiza concolor concolor
- Amaurospiza concolor relicta
- Amaurospiza moesta (Blackish-blue Seedeater)
- Amblycercus holosericeus (Yellow-billed Cacique)
- Amblycercus holosericeus australis
- Amblycercus holosericeus flavirostris
- Amblycercus holosericeus holosericeus
- Amblyornis flavifrons (Golden-fronted Bowerbird)
- Amblyornis inornata (Vogelkop Bowerbird)
- Amblyornis macgregoriae (Macgregor’s Bowerbird)
- Amblyornis macgregoriae macgregoriae
- Amblyornis macgregoriae mayri
- Amblyornis macgregoriae nubicola
- Amblyornis subalaris (Streaked Bowerbird)
- Amblyospiza albifrons (Grosbeak Weaver)
- Amblyospiza albifrons albifrons
- Amblyospiza albifrons maxima
- Amblyospiza albifrons melanota
- Amblyospiza albifrons montana
- Amblyospiza albifrons saturata
- Amblyospiza albifrons unicolor
- Amblyramphus holosericeus (Scarlet-headed Blackbird)
- Ammodramus aurifrons (Yellow-browed Sparrow)
- Ammodramus aurifrons aurifrons
- Ammodramus aurifrons cherriei
- Ammodramus aurifrons tenebrosus
- Ammodramus bairdii (Baird’s Sparrow)
- Ammodramus caudacutus (Saltmarsh Sharp-tailed Sparrow)
- Ammodramus caudacutus caudacutus
- Ammodramus caudacutus diversus
- Ammodramus henslowii (Henslow’s Sparrow)
- Ammodramus henslowii henslowii
- Ammodramus henslowii susurrans
- Ammodramus humeralis (Grassland Sparrow)
- Ammodramus humeralis humeralis
- Ammodramus humeralis xanthornus
- Ammodramus leconteii (Le Conte’s Sparrow)
- Ammodramus maritimus (Seaside Sparrow)
- Ammodramus maritimus [sennetti Group] (Seaside Sparrow (Gulf of Mexico))
- Ammodramus maritimus fisheri
- Ammodramus maritimus macgillivraii
- Ammodramus maritimus maritimus
- Ammodramus maritimus mirabilis (Seaside Sparrow (Cape Sable))
- Ammodramus maritimus nigrescens (Seaside Sparrow (Dusky))
- Ammodramus maritimus peninsulae
- Ammodramus maritimus sennetti
- Ammodramus nelsoni (Nelson’s Sharp-tailed Sparrow)
- Ammodramus nelsoni alter
- Ammodramus nelsoni nelsoni
- Ammodramus nelsoni subvirgatus (Nelson’s Sharp-tailed Sparrow (Atlantic Coast))
- Ammodramus savannarum (Grasshopper Sparrow)
- Ammodramus savannarum ammolegus
- Ammodramus savannarum bimaculatus
- Ammodramus savannarum caribaeus
- Ammodramus savannarum caucae
- Ammodramus savannarum cracens
- Ammodramus savannarum floridanus (Grasshopper Sparrow (Florida))
- Ammodramus savannarum intricatus
- Ammodramus savannarum perpallidus
- Ammodramus savannarum pratensis (Grasshopper Sparrow (Eastern))
- Ammodramus savannarum savannarum
- Ammomanes cinctura (Bar-tailed Lark)
- Ammomanes cinctura cinctura
- Ammomanes deserti (Desert Lark)
- Ammomanes deserti annae
- Ammomanes deserti azizi
- Ammomanes deserti deserti
- Ammomanes deserti insularis
- Ammomanes deserti iranica
- Ammomanes deserti isabellina
- Ammomanes deserti orientalis
- Ammomanes deserti parvirostris
- Ammomanes deserti phoenicuroides
- Ammomanes deserti saturata
- Ammomanes deserti whitakeri
- Ammomanes phoenicura (Rufous-tailed Lark)
- Ammomanopsis grayi (Gray’s Lark)
- Ammomanopsis grayi grayi
- Ammomanopsis grayi hoeschi
- Ampeliceps coronatus (Golden-crested Myna)
- Ampelioides tschudii (Scaled Fruiteater)
- Ampelion rubrocristatus (Red-crested Cotinga)
- Ampelion rufaxilla (Chestnut-crested Cotinga)
- Ampelion rufaxilla rufaxilla
- Amphispiza belli (Sage Sparrow)
- Amphispiza belli belli (Sage Sparrow (Bell’s))
- Amphispiza belli cinerea (Sage Sparrow (Gray))
- Amphispiza belli clementeae (Sage Sparrow (San Clemente))
- Amphispiza belli nevadensis (Sage Sparrow (Interior))
- Amphispiza bilineata (Black-throated Sparrow)
- Amphispiza bilineata bangsi
- Amphispiza bilineata bilineata
- Amphispiza bilineata cana
- Amphispiza bilineata deserticola
- Amphispiza bilineata grisea
- Amphispiza bilineata opuntia
- Amphispiza bilineata pacifica
- Amphispiza bilineata tortugae
- Amytornis ballarae (Kalkadoon Grasswren)
- Amytornis barbatus (Gray Grasswren)
- Amytornis barbatus barbatus
- Amytornis dorotheae (Carpentarian Grasswren)
- Amytornis goyderi (Eyrean Grasswren)
- Amytornis housei (Black Grasswren)
- Amytornis merrotsyi (Short-tailed Grasswren)
- Amytornis purnelli (Dusky Grasswren)
- Amytornis striatus (Striated Grasswren)
- Amytornis striatus rowleyi
- Amytornis striatus striatus
- Amytornis striatus whitei
- Amytornis textilis (Thick-billed Grasswren)
- Amytornis textilis modestus
- Amytornis textilis myall
- Amytornis textilis textilis
- Amytornis woodwardi (White-throated Grasswren)
- Anabacerthia amaurotis (White-browed Foliage-gleaner)
- Anabacerthia striaticollis (Montane Foliage-gleaner)
- Anabacerthia striaticollis anxia
- Anabacerthia striaticollis montana
- Anabacerthia striaticollis perijana
- Anabacerthia striaticollis striaticollis
- Anabacerthia striaticollis venezuelana
- Anabacerthia variegaticeps (Scaly-throated Foliage-gleaner)
- Anabacerthia variegaticeps temporalis
- Anabacerthia variegaticeps variegaticeps
- Anabathmis hartlaubii (Principe Sunbird)
- Anabathmis newtonii (Newton’s Sunbird)
- Anabathmis reichenbachii (Reichenbach’s Sunbird)
- Anabazenops dorsalis (Dusky-cheeked Foliage-gleaner)
- Anabazenops fuscus (White-collared Foliage-gleaner)
- Anairetes agilis (Agile Tit-Tyrant)
- Anairetes agraphia (Unstreaked Tit-Tyrant)
- Anairetes agraphia agraphia
- Anairetes agraphia plengei
- Anairetes agraphia squamigera
- Anairetes alpinus (Ash-breasted Tit-Tyrant)
- Anairetes alpinus alpinus
- Anairetes alpinus bolivianus
- Anairetes fernandezianus (Juan Fernandez Tit-Tyrant)
- Anairetes flavirostris (Yellow-billed Tit-Tyrant)
- Anairetes flavirostris arequipae
- Anairetes flavirostris flavirostris
- Anairetes nigrocristatus (Black-crested Tit-Tyrant)
- Anairetes parulus (Tufted Tit-Tyrant)
- Anairetes parulus aequatorialis
- Anairetes parulus parulus
- Anairetes parulus patagonicus
- Anairetes reguloides (Pied-crested Tit-Tyrant)
- Anairetes reguloides albiventris
- Anairetes reguloides reguloides
- Anaplectes rubriceps (Red-headed Weaver)
- Anaplectes rubriceps jubaensis
- Anaplectes rubriceps leuconotus
- Anaplectes rubriceps rubriceps
- Ancistrops strigilatus (Chestnut-winged Hookbill)
- Ancistrops strigilatus strigilatus
- Andropadus ansorgei (Ansorge’s Greenbul)
- Andropadus ansorgei ansorgei
- Andropadus ansorgei kavirondensis
- Andropadus curvirostris (Plain Greenbul)
- Andropadus curvirostris curvirostris
- Andropadus gracilirostris (Slender-billed Greenbul)
- Andropadus gracilirostris gracilirostris
- Andropadus gracilirostris percivali
- Andropadus gracilis (Gray Greenbul)
- Andropadus gracilis gracilis
- Andropadus gracilis ugandae
- Andropadus importunus (Sombre Greenbul)
- Andropadus latirostris (Yellow-whiskered Greenbul)
- Andropadus latirostris congener
- Andropadus latirostris latirostris
- Andropadus masukuensis (Shelley’s Greenbul)
- Andropadus masukuensis kakamegae
- Andropadus masukuensis masukuensis
- Andropadus masukuensis roehli
- Andropadus milanjensis (Stripe-cheeked Greenbul)
- Andropadus milanjensis milanjensis
- Andropadus milanjensis olivaceiceps
- Andropadus milanjensis striifacies
- Andropadus montanus (Cameroon Mountain Greenbul)
- Andropadus nigriceps (Eastern Mountain-Greenbul)
- Andropadus nigriceps chlorigula
- Andropadus nigriceps fusciceps
- Andropadus nigriceps kikuyuensis
- Andropadus nigriceps neumanni
- Andropadus nigriceps nigriceps
- Andropadus nigriceps usambarae
- Andropadus tephrolaemus (Western Mountain-Greenbul)
- Andropadus tephrolaemus bamendae
- Andropadus tephrolaemus tephrolaemus
- Andropadus virens (Little Greenbul)
- Andropadus virens erythropterus
- Andropadus virens hallae
- Andropadus virens holochlorus
- Andropadus virens marwitzi
- Andropadus virens virens
- Andropadus virens zanzibaricus
- Androphobus viridis (Papuan Whipbird)
- Anisognathus igniventris (Scarlet-bellied Mountain-Tanager)
- Anisognathus igniventris erythronotus
- Anisognathus igniventris igniventris
- Anisognathus igniventris lunulatus
- Anisognathus lacrymosus (Lacrimose Mountain-Tanager)
- Anisognathus lacrymosus caerulescens
- Anisognathus lacrymosus lacrymosus
- Anisognathus lacrymosus melanops
- Anisognathus lacrymosus olivaceiceps
- Anisognathus lacrymosus palpebrosus
- Anisognathus melanogenys (Black-cheeked Mountain-Tanager)
- Anisognathus notabilis (Black-chinned Mountain-Tanager)
- Anisognathus somptuosus (Blue-winged Mountain-Tanager)
- Anisognathus somptuosus cyanopterus
- Anisognathus somptuosus flavinuchus
- Anisognathus somptuosus somptuosus
- Anisognathus somptuosus venezuelanus
- Anisognathus somptuosus victorini
- Anomalospiza imberbis (Parasitic Weaver)
- Anomalospiza imberbis butleri
- Anomalospiza imberbis imberbis
- Anthobaphes violacea (Orange-breasted Sunbird)
- Anthochaera carunculata (Red Wattlebird)
- Anthochaera carunculata carunculata
- Anthochaera carunculata woodwardi
- Anthochaera chrysoptera (Brush Wattlebird)
- Anthochaera chrysoptera chrysoptera
- Anthochaera chrysoptera halmaturina
- Anthochaera chrysoptera tasmanica
- Anthochaera lunulata (Little Wattlebird)
- Anthochaera paradoxa (Yellow Wattlebird)
- Anthochaera paradoxa kingi
- Anthochaera paradoxa paradoxa
- Anthornis melanura (New Zealand Bellbird)
- Anthornis melanura dumerilii
- Anthornis melanura melanocephala
- Anthornis melanura melanura
- Anthornis melanura obscura
- Anthornis melanura oneho
- Anthoscopus caroli (African Penduline-Tit)
- Anthoscopus caroli ansorgei
- Anthoscopus caroli caroli
- Anthoscopus caroli hellmayri
- Anthoscopus caroli pallescens
- Anthoscopus caroli rhodesiae
- Anthoscopus caroli sharpei
- Anthoscopus caroli sylviella (rothschildi)
- Anthoscopus flavifrons (Forest Penduline-Tit)
- Anthoscopus flavifrons flavifrons
- Anthoscopus minutus (Southern Penduline-Tit)
- Anthoscopus minutus damarensis
- Anthoscopus minutus minutus
- Anthoscopus musculus (Mouse-colored Penduline-Tit)
- Anthoscopus parvulus (Yellow Penduline-Tit)
- Anthoscopus parvulus aureus
- Anthoscopus parvulus parvulus
- Anthoscopus parvulus senegalensis
- Anthoscopus punctifrons (Sennar Penduline-Tit)
- Anthreptes anchietae (Anchieta’s Sunbird)
- Anthreptes aurantium (Violet-tailed Sunbird)
- Anthreptes gabonicus (Mouse-brown Sunbird)
- Anthreptes longuemarei (Western Violet-backed Sunbird)
- Anthreptes longuemarei angolensis
- Anthreptes longuemarei longuemarei
- Anthreptes longuemarei nyassae
- Anthreptes malacensis (Plain-throated Sunbird)
- Anthreptes malacensis birgitae
- Anthreptes malacensis borneensis
- Anthreptes malacensis griseigularis
- Anthreptes malacensis iris
- Anthreptes malacensis malacensis
- Anthreptes malacensis paraguae
- Anthreptes neglectus (Uluguru Violet-backed Sunbird)
- Anthreptes orientalis (Kenya Violet-backed Sunbird)
- Anthreptes rectirostris (Green Sunbird)
- Anthreptes rectirostris rectirostris
- Anthreptes rectirostris tephrolaemus
- Anthreptes reichenowi (Plain-backed Sunbird)
- Anthreptes reichenowi reichenowi
- Anthreptes reichenowi yokanae
- Anthreptes rhodolaemus (Red-throated Sunbird)
- Anthreptes rubritorques (Banded Sunbird)
- Anthreptes seimundi (Little Green Sunbird)
- Anthreptes seimundi minor
- Anthreptes seimundi seimundi
- Anthreptes simplex (Plain Sunbird)
- Anthus antarcticus (South Georgia Pipit)
- Anthus berthelotii (Berthelot’s Pipit)
- Anthus berthelotii berthelotii
- Anthus berthelotii madeirensis
- Anthus bogotensis (Paramo Pipit)
- Anthus bogotensis bogotensis
- Anthus bogotensis immaculatus
- Anthus bogotensis meridae
- Anthus brachyurus (Short-tailed Pipit)
- Anthus brachyurus brachyurus
- Anthus caffer (Bush Pipit)
- Anthus caffer blayneyi
- Anthus caffer caffer
- Anthus caffer traylori
- Anthus campestris (Tawny Pipit)
- Anthus campestris campestris (boehmi)
- Anthus campestris griseus
- Anthus cervinus (Red-throated Pipit)
- Anthus chacoensis (Chaco Pipit)
- Anthus cinnamomeus (African Pipit)
- Anthus cinnamomeus annae
- Anthus cinnamomeus bocagei
- Anthus cinnamomeus camaroonensis
- Anthus cinnamomeus cinnamomeus
- Anthus cinnamomeus eximius
- Anthus cinnamomeus grotei
- Anthus cinnamomeus itombwensis
- Anthus cinnamomeus lacuum
- Anthus cinnamomeus lynesi
- Anthus cinnamomeus spurius
- Anthus correndera (Correndera Pipit)
- Anthus correndera [correndera Group] (Correndera Pipit (Correndera))
- Anthus correndera chilensis
- Anthus correndera correndera
- Anthus correndera grayi (Correndera Pipit (Falklands))
- Anthus crenatus (Yellow-tufted Pipit)
- Anthus furcatus (Short-billed Pipit)
- Anthus furcatus brevirostris
- Anthus furcatus furcatus
- Anthus godlewskii (Blyth’s Pipit)
- Anthus gustavi (Pechora Pipit)
- Anthus gustavi gustavi
- Anthus gustavi menzbieri
- Anthus gutturalis (Alpine Pipit)
- Anthus gutturalis gutturalis
- Anthus hellmayri (Hellmayr’s Pipit)
- Anthus hellmayri brasilianus
- Anthus hellmayri dabbenei
- Anthus hellmayri hellmayri
- Anthus hodgsoni (Olive-backed Pipit)
- Anthus hodgsoni hodgsoni (berezowskii)
- Anthus hodgsoni yunnanensis
- Anthus hoeschi (Mountain Pipit)
- Anthus latistriatus (Jackson’s Pipit)
- Anthus leucophrys (Plain-backed Pipit)
- Anthus leucophrys ansorgei
- Anthus leucophrys bohndorffi
- Anthus leucophrys gouldii
- Anthus leucophrys zenkeri
- Anthus lineiventris (Striped Pipit)
- Anthus lineiventris lineiventris
- Anthus longicaudatus (Long-tailed Pipit)
- Anthus lutescens (Yellowish Pipit)
- Anthus lutescens lutescens
- Anthus lutescens parvus
- Anthus lutescens peruvianus
- Anthus melindae (Malindi Pipit)
- Anthus melindae melindae
- Anthus nattereri (Ochre-breasted Pipit)
- Anthus nilghiriensis (Nilgiri Pipit)
- Anthus novaeseelandiae (Australasian Pipit)
- Anthus novaeseelandiae aucklandicus
- Anthus novaeseelandiae bistriatus
- Anthus novaeseelandiae chathamensis
- Anthus novaeseelandiae exiguus
- Anthus novaeseelandiae rogersi
- Anthus novaeseelandiae steindachneri
- Anthus nyassae (Woodland Pipit)
- Anthus nyassae chersophilus
- Anthus nyassae nyassae
- Anthus nyassae schoutedeni
- Anthus pallidiventris (Long-legged Pipit)
- Anthus pallidiventris pallidiventris
- Anthus petrosus (Rock Pipit)
- Anthus petrosus kleinschmidti
- Anthus petrosus littoralis
- Anthus petrosus petrosus (meinertzhageni)
- Anthus pratensis (Meadow Pipit)
- Anthus pratensis pratensis
- Anthus pratensis whistleri
- Anthus pseudosimilis (Kimberley Pipit)
- Anthus richardi (Richard’s Pipit)
- Anthus richardi centralasiae
- Anthus richardi dauricus
- Anthus richardi richardi
- Anthus richardi sinensis
- Anthus richardi ussuriensis
- Anthus roseatus (Rosy Pipit)
- Anthus rubescens (American Pipit)
- Anthus rubescens alticola (American Pipit (Western montane))
- Anthus rubescens pacificus
- Anthus rubescens rubescens
- Anthus rubescens rubescens/pacificus (American Pipit (American))
- Anthus rufulus (Oriental Pipit)
- Anthus rufulus albidus
- Anthus rufulus lugubris
- Anthus rufulus malayensis
- Anthus rufulus medius
- Anthus rufulus rufulus
- Anthus similis (Long-billed Pipit)
- Anthus similis arabicus
- Anthus similis bannermani
- Anthus similis captus
- Anthus similis decaptus
- Anthus similis jerdoni
- Anthus similis nicholsoni
- Anthus similis primarius
- Anthus similis similis
- Anthus similis sokotrae
- Anthus sokokensis (Sokoke Pipit)
- Anthus spinoletta (Water Pipit)
- Anthus spinoletta blakistoni
- Anthus spinoletta coutellii
- Anthus spinoletta spinoletta
- Anthus spragueii (Sprague’s Pipit)
- Anthus sylvanus (Upland Pipit)
- Anthus trivialis (Tree Pipit)
- Anthus trivialis haringtoni
- Anthus trivialis trivialis
- Anthus vaalensis (Buffy Pipit)
- Anthus vaalensis goodsoni
- Antilophia bokermanni (Araripe Manakin)
- Antilophia galeata (Helmeted Manakin)
- Anumbius annumbi (Firewood-gatherer)
- Apalis alticola (Brown-headed Apalis)
- Apalis alticola alticola
- Apalis bamendae (Bamenda Apalis)
- Apalis binotata (Masked Apalis)
- Apalis chapini (Chapin’s Apalis)
- Apalis chapini chapini
- Apalis chariessa (White-winged Apalis)
- Apalis chariessa chariessa
- Apalis chirindensis (Chirinda Apalis)