- Acanthidops bairdii (Peg-billed Finch)
- Aimophila aestivalis (Bachman’s Sparrow)
- Aimophila aestivalis aestivalis
- Aimophila aestivalis bachmani
- Aimophila aestivalis illinoensis
- Aimophila botterii (Botteri’s Sparrow)
- Aimophila botterii arizonae
- Aimophila botterii botterii
- Aimophila botterii goldmani
- Aimophila botterii mexicana
- Aimophila botterii texana
- Aimophila carpalis (Rufous-winged Sparrow)
- Aimophila carpalis carpalis
- Aimophila cassinii (Cassin’s Sparrow)
- Aimophila humeralis (Black-chested Sparrow)
- Aimophila mystacalis (Bridled Sparrow)
- Aimophila notosticta (Oaxaca Sparrow)
- Aimophila quinquestriata (Five-striped Sparrow)
- Aimophila quinquestriata quinquestriata
- Aimophila quinquestriata septentrionalis
- Aimophila rufescens (Rusty Sparrow)
- Aimophila rufescens discolor
- Aimophila rufescens mcleodii
- Aimophila rufescens pectoralis (gigas)
- Aimophila ruficauda (Stripe-headed Sparrow)
- Aimophila ruficauda acuminata
- Aimophila ruficauda connectens
- Aimophila ruficauda lawrencii
- Aimophila ruficauda ruficauda
- Aimophila ruficeps (Rufous-crowned Sparrow)
- Aimophila ruficeps australis
- Aimophila ruficeps canescens (lambi)
- Aimophila ruficeps fusca
- Aimophila ruficeps obscura
- Aimophila ruficeps ruficeps
- Aimophila ruficeps rupicola
- Aimophila ruficeps sanctorum
- Aimophila ruficeps scottii
- Aimophila ruficeps simulans
- Aimophila ruficeps sororia
- Aimophila stolzmanni (Tumbes Sparrow)
- Aimophila strigiceps (Stripe-capped Sparrow)
- Aimophila strigiceps dabbenei
- Aimophila strigiceps strigiceps
- Aimophila sumichrasti (Cinnamon-tailed Sparrow)
- Amaurospiza carrizalensis (Carrizal Seedeater)
- Amaurospiza concolor (Blue Seedeater)
- Amaurospiza concolor aequatorialis
- Amaurospiza concolor concolor
- Amaurospiza concolor relicta
- Amaurospiza moesta (Blackish-blue Seedeater)
- 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
- 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
- Arremon abeillei (Black-capped Sparrow)
- Arremon abeillei abeillei
- Arremon abeillei nigriceps
- Arremon aurantiirostris (Orange-billed Sparrow)
- Arremon aurantiirostris aurantiirostris
- Arremon aurantiirostris erythrorhynchus
- Arremon aurantiirostris occidentalis
- Arremon aurantiirostris rufidorsalis
- Arremon aurantiirostris saturatus
- Arremon aurantiirostris spectabilis
- Arremon brunneinucha (Chestnut-capped Brush-Finch)
- Arremon brunneinucha [brunneinucha Group] (Chestnut-capped Brush-Finch (Chestnut-capped))
- Arremon brunneinucha alleni
- Arremon brunneinucha brunneinucha
- Arremon brunneinucha frontalis
- Arremon brunneinucha inornatus
- Arremon brunneinucha macrourus
- Arremon castaneiceps (Olive Finch)
- Arremon crassirostris (Sooty-faced Finch)
- Arremon flavirostris (Saffron-billed Sparrow)
- Arremon flavirostris flavirostris
- Arremon flavirostris polionotus
- Arremon franciscanus (Sao Francisco Sparrow)
- Arremon schlegeli (Golden-winged Sparrow)
- Arremon schlegeli schlegeli
- Arremon semitorquatus (Half-collared Sparrow)
- Arremon taciturnus (Pectoral Sparrow)
- Arremon taciturnus axillaris
- Arremon taciturnus nigrirostris
- Arremon taciturnus taciturnus
- Arremon torquatus (Stripe-headed Brush-Finch)
- Arremon torquatus assimilis
- Arremon torquatus atricapillus
- Arremon torquatus basilicus
- Arremon torquatus costaricensis
- Arremon torquatus nigrifrons
- Arremon torquatus poliophrys
- Arremon torquatus tacarcunae
- Arremon torquatus torquatus
- Arremon virenticeps (Green-striped Brush-Finch)
- Arremon virenticeps virenticeps
- Arremonops chloronotus (Green-backed Sparrow)
- Arremonops chloronotus chloronotus
- Arremonops conirostris (Black-striped Sparrow)
- Arremonops conirostris conirostris
- Arremonops conirostris richmondi
- Arremonops conirostris striaticeps
- Arremonops conirostris umbrinus
- Arremonops rufivirgatus (Olive Sparrow)
- Arremonops rufivirgatus chiapensis
- Arremonops rufivirgatus crassirostris
- Arremonops rufivirgatus ridgwayi
- Arremonops rufivirgatus rufivirgatus
- Arremonops rufivirgatus sinaloae
- Arremonops rufivirgatus sumichrasti
- Arremonops rufivirgatus superciliosus
- Arremonops rufivirgatus verticalis
- Arremonops tocuyensis (Tocuyo Sparrow)
- Atlapetes albiceps (White-headed Brush-Finch)
- Atlapetes albinucha (White-naped Brush-Finch)
- Atlapetes albinucha albinucha
- Atlapetes albinucha brunnescens
- Atlapetes albinucha coloratus
- Atlapetes albinucha griseipectus
- Atlapetes albinucha gutturalis
- Atlapetes albinucha parvirostris
- Atlapetes albofrenatus (Moustached Brush-Finch)
- Atlapetes albofrenatus albofrenatus
- Atlapetes albofrenatus meridae
- Atlapetes blancae (Antioquia Brush-Finch)
- Atlapetes canigenis (Cusco Brush-Finch)
- Atlapetes citrinellus (Yellow-striped Brush-Finch)
- Atlapetes flaviceps (Olive-headed Brush-Finch)
- Atlapetes forbesi (Apurimac Brush-Finch)
- Atlapetes fulviceps (Fulvous-headed Brush-Finch)
- Atlapetes fuscoolivaceus (Dusky-headed Brush-Finch)
- Atlapetes latinuchus (Yellow-breasted Brush-Finch)
- Atlapetes latinuchus baroni
- Atlapetes latinuchus comptus
- Atlapetes latinuchus latinuchus
- Atlapetes latinuchus phelpsi
- Atlapetes latinuchus simplex
- Atlapetes latinuchus spodionotus
- Atlapetes latinuchus yariguierum
- Atlapetes leucopis (White-rimmed Brush-Finch)
- Atlapetes leucopterus (White-winged Brush-Finch)
- Atlapetes leucopterus [leucopterus Group] (White-winged Brush-Finch (White-winged))
- Atlapetes leucopterus dresseri
- Atlapetes leucopterus leucopterus
- Atlapetes melanocephalus (Santa Marta Brush-Finch)
- Atlapetes melanolaemus (Black-faced Brush-Finch)
- Atlapetes melanopsis (Black-spectacled Brush-Finch)
- Atlapetes nationi (Rusty-bellied Brush-Finch)
- Atlapetes nationi brunneiceps
- Atlapetes nationi nationi
- Atlapetes pallidiceps (Pale-headed Brush-Finch)
- Atlapetes pallidinucha (Pale-naped Brush-Finch)
- Atlapetes pallidinucha pallidinucha
- Atlapetes personatus (Tepui Brush-Finch)
- Atlapetes personatus collaris
- Atlapetes personatus duidae
- Atlapetes personatus jugularis
- Atlapetes personatus personatus
- Atlapetes pileatus (Rufous-capped Brush-Finch)
- Atlapetes pileatus dilutus
- Atlapetes pileatus pileatus
- Atlapetes rufigenis (Rufous-eared Brush-Finch)
- Atlapetes rufinucha (Rufous-naped Brush-Finch)
- Atlapetes rufinucha carrikeri
- Atlapetes rufinucha rufinucha
- Atlapetes schistaceus (Slaty Brush-Finch)
- Atlapetes schistaceus castaneifrons
- Atlapetes schistaceus schistaceus
- Atlapetes schistaceus taczanowskii
- Atlapetes seebohmi (Bay-crowned Brush-Finch)
- Atlapetes seebohmi seebohmi
- Atlapetes seebohmi simonsi
- Atlapetes semirufus (Ochre-breasted Brush-Finch)
- Atlapetes semirufus albigula
- Atlapetes semirufus semirufus
- Atlapetes semirufus zimmeri
- Atlapetes terborghi (Vilcabamba Brush-Finch)
- Atlapetes tricolor (Tricolored Brush-Finch)
- Atlapetes tricolor crassus
- Atlapetes tricolor tricolor
- Calamospiza melanocorys (Lark Bunting)
- Calcarius lapponicus (Lapland Longspur)
- Calcarius lapponicus alascensis
- Calcarius lapponicus coloratus
- Calcarius lapponicus lapponicus
- Calcarius mccownii (McCown’s Longspur)
- Calcarius ornatus (Chestnut-collared Longspur)
- Calcarius pictus (Smith’s Longspur)
- Camarhynchus heliobates (Mangrove Finch)
- Camarhynchus pallidus (Woodpecker Finch)
- Camarhynchus pallidus pallidus
- Camarhynchus pallidus productus
- Camarhynchus pallidus striatipectus
- Camarhynchus parvulus (Small Tree-Finch)
- Camarhynchus parvulus parvulus
- Camarhynchus parvulus salvini
- Camarhynchus pauper (Medium Tree-Finch)
- Camarhynchus psittacula (Large Tree-Finch)
- Camarhynchus psittacula affinis
- Camarhynchus psittacula psittacula
- Catamenia analis (Band-tailed Seedeater)
- Catamenia analis griseiventris
- Catamenia analis insignis
- Catamenia homochroa (Paramo Seedeater)
- Catamenia homochroa homochroa
- Catamenia inornata (Plain-colored Seedeater)
- Catamenia inornata inornata
- Catamenia inornata minor
- Certhidea olivacea (Warbler Finch)
- Certhidea olivacea becki
- Certhidea olivacea bifasciata
- Certhidea olivacea cinerascens
- Certhidea olivacea fusca
- Certhidea olivacea mentalis
- Certhidea olivacea olivacea
- Certhidea olivacea ridgwayi
- Charitospiza eucosma (Coal-crested Finch)
- Chondestes grammacus (Lark Sparrow)
- Chondestes grammacus grammacus
- Chondestes grammacus strigatus
- Coryphaspiza melanotis (Black-masked Finch)
- Coryphaspiza melanotis melanotis
- Coryphospingus cucullatus (Red-crested Finch)
- Coryphospingus cucullatus cucullatus
- Coryphospingus cucullatus fargoi
- Coryphospingus cucullatus rubescens
- Coryphospingus pileatus (Pileated Finch)
- Coryphospingus pileatus brevicaudus
- Coryphospingus pileatus pileatus
- Coryphospingus pileatus rostratus
- Diglossa albilatera (White-sided Flowerpiercer)
- Diglossa albilatera affinis
- Diglossa albilatera albilatera
- Diglossa albilatera schistacea
- Diglossa baritula (Cinnamon-bellied Flowerpiercer)
- Diglossa baritula baritula
- Diglossa baritula montana
- Diglossa baritula parva
- Diglossa brunneiventris (Black-throated Flowerpiercer)
- Diglossa caerulescens (Bluish Flowerpiercer)
- Diglossa caerulescens caerulescens
- Diglossa caerulescens media
- Diglossa caerulescens mentalis
- Diglossa caerulescens pallida
- Diglossa caerulescens saturata
- Diglossa carbonaria (Gray-bellied Flowerpiercer)
- Diglossa cyanea (Masked Flowerpiercer)
- Diglossa cyanea cyanea
- Diglossa cyanea dispar
- Diglossa cyanea melanopis
- Diglossa cyanea obscura
- Diglossa duidae (Scaled Flowerpiercer)
- Diglossa duidae duidae
- Diglossa glauca (Deep-blue Flowerpiercer)
- Diglossa glauca glauca
- Diglossa glauca tyrianthina
- Diglossa gloriosa (Merida Flowerpiercer)
- Diglossa gloriosissima (Chestnut-bellied Flowerpiercer)
- Diglossa humeralis (Black Flowerpiercer)
- Diglossa humeralis aterrima
- Diglossa humeralis humeralis
- Diglossa humeralis nocticolor
- Diglossa indigotica (Indigo Flowerpiercer)
- Diglossa lafresnayii (Glossy Flowerpiercer)
- Diglossa major (Greater Flowerpiercer)
- Diglossa major disjuncta
- Diglossa major major
- Diglossa mystacalis (Moustached Flowerpiercer)
- Diglossa mystacalis albilinea (Moustached Flowerpiercer (albilinea))
- Diglossa mystacalis mystacalis (Moustached Flowerpiercer (mystacalis))
- Diglossa mystacalis pectoralis (Moustached Flowerpiercer (pectoralis))
- Diglossa mystacalis unicincta (Moustached Flowerpiercer (unicincta))
- Diglossa plumbea (Slaty Flowerpiercer)
- Diglossa plumbea plumbea
- Diglossa plumbea veraguensis
- Diglossa sittoides (Rusty Flowerpiercer)
- Diglossa sittoides coelestis
- Diglossa sittoides dorbignyi
- Diglossa sittoides hyperythra
- Diglossa sittoides sittoides
- Diglossa venezuelensis (Venezuelan Flowerpiercer)
- Diuca diuca (Common Diuca-Finch)
- Diuca diuca chiloensis
- Diuca diuca crassirostris
- Diuca diuca diuca
- Diuca diuca minor
- Diuca speculifera (White-winged Diuca-Finch)
- Diuca speculifera magnirostris
- Diuca speculifera speculifera
- Dolospingus fringilloides (White-naped Seedeater)
- Donacospiza albifrons (Long-tailed Reed-Finch)
- Emberiza affinis (Brown-rumped Bunting)
- Emberiza affinis affinis
- Emberiza affinis nigeriae
- Emberiza affinis vulpecula
- Emberiza aureola (Yellow-breasted Bunting)
- Emberiza aureola aureola
- Emberiza aureola ornata
- Emberiza bruniceps (Red-headed Bunting)
- Emberiza buchanani (Gray-hooded Bunting)
- Emberiza buchanani buchanani
- Emberiza buchanani cerrutii
- Emberiza buchanani neobscura
- Emberiza cabanisi (Cabanis’s Bunting)
- Emberiza cabanisi cabanisi
- Emberiza caesia (Cretzschmar’s Bunting)
- Emberiza calandra (Corn Bunting)
- Emberiza capensis (Cape Bunting)
- Emberiza capensis bradfieldi
- Emberiza capensis capensis
- Emberiza capensis cinnamomea (media)
- Emberiza capensis reidi
- Emberiza capensis vinacea
- Emberiza chrysophrys (Yellow-browed Bunting)
- Emberiza cia (Rock Bunting)
- Emberiza cia cia
- Emberiza cia hordei
- Emberiza cia par
- Emberiza cia prageri
- Emberiza cineracea (Cinereous Bunting)
- Emberiza cineracea cineracea
- Emberiza cineracea semenowi
- Emberiza cioides (Meadow Bunting)
- Emberiza cioides castaneiceps
- Emberiza cioides cioides
- Emberiza cioides ciopsis
- Emberiza cioides tarbagataica
- Emberiza cioides weigoldi
- Emberiza cirlus (Cirl Bunting)
- Emberiza cirlus cirlus
- Emberiza citrinella (Yellowhammer)
- Emberiza citrinella caliginosa
- Emberiza citrinella citrinella
- Emberiza citrinella erythrogenys
- Emberiza elegans (Yellow-throated Bunting)
- Emberiza elegans elegans
- Emberiza elegans elegantula
- Emberiza elegans ticehursti
- Emberiza flaviventris (Golden-breasted Bunting)
- Emberiza flaviventris flavigaster
- Emberiza flaviventris flaviventris
- Emberiza flaviventris princeps
- Emberiza fucata (Chestnut-eared Bunting)
- Emberiza fucata arcuata
- Emberiza fucata fucata
- Emberiza godlewskii (Godlewski’s Bunting)
- Emberiza godlewskii godlewskii
- Emberiza godlewskii khamensis
- Emberiza godlewskii omissa
- Emberiza godlewskii yunnanensis
- Emberiza hortulana (Ortolan Bunting)
- Emberiza impetuani (Lark-like Bunting)
- Emberiza impetuani impetuani
- Emberiza impetuani sloggetti
- Emberiza jankowskii (Rufous-backed Bunting)
- Emberiza koslowi (Tibetan Bunting)
- Emberiza leucocephalos (Pine Bunting)
- Emberiza leucocephalos fronto
- Emberiza leucocephalos leucocephalos
- Emberiza melanocephala (Black-headed Bunting)
- Emberiza pallasi (Pallas’s Bunting)
- Emberiza pallasi lydiae
- Emberiza pallasi pallasi
- Emberiza pallasi polaris
- Emberiza poliopleura (Somali Bunting)
- Emberiza pusilla (Little Bunting)
- Emberiza rustica (Rustic Bunting)
- Emberiza rustica latifascia
- Emberiza rustica rustica
- Emberiza rutila (Chestnut Bunting)
- Emberiza schoeniclus (Reed Bunting)
- Emberiza schoeniclus caspia
- Emberiza schoeniclus incognita
- Emberiza schoeniclus korejewi
- Emberiza schoeniclus minor
- Emberiza schoeniclus pallidior
- Emberiza schoeniclus parvirostris
- Emberiza schoeniclus passerina
- Emberiza schoeniclus pyrrhulina
- Emberiza schoeniclus pyrrhuloides
- Emberiza schoeniclus reiseri
- Emberiza schoeniclus schoeniclus
- Emberiza schoeniclus ukrainae
- Emberiza schoeniclus witherbyi
- Emberiza socotrana (Socotra Bunting)
- Emberiza spodocephala (Black-faced Bunting)
- Emberiza spodocephala personata
- Emberiza spodocephala sordida
- Emberiza spodocephala spodocephala
- Emberiza stewarti (Chestnut-breasted Bunting)
- Emberiza striolata (House Bunting)
- Emberiza striolata jebelmarrae
- Emberiza striolata sahari (theresae)
- Emberiza striolata saturatior
- Emberiza striolata striolata
- Emberiza sulphurata (Yellow Bunting)
- Emberiza tahapisi (Cinnamon-breasted Bunting)
- Emberiza tahapisi arabica
- Emberiza tahapisi goslingi
- Emberiza tahapisi insularis
- Emberiza tahapisi septemstriata
- Emberiza tristrami (Tristram’s Bunting)
- Emberiza variabilis (Gray Bunting)
- Emberiza vincenti (Vincent’s Bunting)
- Emberiza yessoensis (Ochre-rumped Bunting)
- Emberiza yessoensis continentalis
- Emberiza yessoensis yessoensis
- Emberizoides duidae (Duida Grass-Finch)
- Emberizoides herbicola (Wedge-tailed Grass-Finch)
- Emberizoides herbicola herbicola
- Emberizoides herbicola hypochondriacus
- Emberizoides herbicola sphenurus
- Emberizoides ypiranganus (Lesser Grass-Finch)
- Embernagra longicauda (Pale-throated Serra-Finch)
- Embernagra platensis (Great Pampa-Finch)
- Embernagra platensis olivascens
- Embernagra platensis platensis
- Euneornis campestris (Orangequit)
- Geospiza conirostris (Large Cactus-Finch)
- Geospiza conirostris conirostris
- Geospiza conirostris darwinii
- Geospiza conirostris propinqua
- Geospiza difficilis (Sharp-beaked Ground-Finch)
- Geospiza difficilis debilirostris
- Geospiza difficilis difficilis
- Geospiza difficilis septentrionalis
- Geospiza fortis (Medium Ground-Finch)
- Geospiza fuliginosa (Small Ground-Finch)
- Geospiza magnirostris (Large Ground-Finch)
- Geospiza scandens (Common Cactus-Finch)
- Geospiza scandens intermedia
- Geospiza scandens rothschildi
- Geospiza scandens scandens
- Gubernatrix cristata (Yellow Cardinal)
- Haplospiza rustica (Slaty Finch)
- Haplospiza rustica rustica
- Haplospiza rustica uniformis
- Haplospiza unicolor (Uniform Finch)
- Idiopsar brachyurus (Short-tailed Finch)
- Incaspiza laeta (Buff-bridled Inca-Finch)
- Incaspiza ortizi (Gray-winged Inca-Finch)
- Incaspiza personata (Rufous-backed Inca-Finch)
- Incaspiza pulchra (Great Inca-Finch)
- Incaspiza watkinsi (Little Inca-Finch)
- Junco hyemalis (Dark-eyed Junco)
- Junco hyemalis [oreganus Group] (Dark-eyed Junco (Oregon))
- Junco hyemalis aikeni (Dark-eyed Junco (White-winged))
- Junco hyemalis caniceps (Dark-eyed Junco (Gray-headed))
- Junco hyemalis carolinensis
- Junco hyemalis dorsalis (Dark-eyed Junco (Red-backed))
- Junco hyemalis hyemalis