- Junco hyemalis hyemalis/carolinensis (Dark-eyed Junco (Slate-colored))
- Junco hyemalis insularis (Dark-eyed Junco (Guadalupe))
- Junco hyemalis mearnsi (Dark-eyed Junco (Pink-sided))
- Junco hyemalis montanus
- Junco hyemalis oreganus
- Junco hyemalis pinosus
- Junco hyemalis shufeldti
- Junco hyemalis thurberi
- Junco hyemalis townsendi
- Junco phaeonotus (Yellow-eyed Junco)
- Junco phaeonotus alticola (Yellow-eyed Junco (Guatemalan))
- Junco phaeonotus bairdi (Yellow-eyed Junco (Baird’s))
- Junco phaeonotus fulvescens (Yellow-eyed Junco (Chiapas))
- Junco phaeonotus palliatus
- Junco phaeonotus phaeonotus
- Junco phaeonotus phaeonotus/palliatus (Yellow-eyed Junco (Mexican))
- Junco vulcani (Volcano Junco)
- Latoucheornis siemsseni (Slaty Bunting)
- Lophospingus griseocristatus (Gray-crested Finch)
- Lophospingus pusillus (Black-crested Finch)
- Loxigilla barbadensis (Barbados Bullfinch)
- Loxigilla noctis (Lesser Antillean Bullfinch)
- Loxigilla noctis coryi
- Loxigilla noctis crissalis
- Loxigilla noctis dominicana
- Loxigilla noctis grenadensis
- Loxigilla noctis noctis
- Loxigilla noctis ridgwayi
- Loxigilla noctis sclateri
- Loxigilla portoricensis (Puerto Rican Bullfinch)
- Loxigilla portoricensis grandis
- Loxigilla portoricensis portoricensis
- Loxigilla violacea (Greater Antillean Bullfinch)
- Loxigilla violacea affinis
- Loxigilla violacea ruficollis
- Loxigilla violacea violacea
- Loxipasser anoxanthus (Yellow-shouldered Grassquit)
- Melanodera melanodera (White-bridled Finch)
- Melanodera melanodera melanodera
- Melanodera melanodera princetoniana
- Melanodera xanthogramma (Yellow-bridled Finch)
- Melanodera xanthogramma xanthogramma
- Melanospiza richardsoni (St. Lucia Black Finch)
- Melophus lathami (Crested Bunting)
- Melopyrrha nigra (Cuban Bullfinch)
- Melopyrrha nigra nigra
- Melopyrrha nigra taylori
- Melospiza georgiana (Swamp Sparrow)
- Melospiza georgiana ericrypta
- Melospiza georgiana georgiana
- Melospiza georgiana nigrescens
- Melospiza lincolnii (Lincoln’s Sparrow)
- Melospiza lincolnii alticola
- Melospiza lincolnii gracilis
- Melospiza lincolnii lincolnii
- Melospiza melodia (Song Sparrow)
- Melospiza melodia adusta
- Melospiza melodia amaka
- Melospiza melodia atlantica
- Melospiza melodia azteca
- Melospiza melodia caurina
- Melospiza melodia clementae
- Melospiza melodia cleonensis
- Melospiza melodia cooperi
- Melospiza melodia coronatorum
- Melospiza melodia euphonia
- Melospiza melodia fallax
- Melospiza melodia fisherella
- Melospiza melodia goldmani
- Melospiza melodia gouldii
- Melospiza melodia graminea
- Melospiza melodia heermanni
- Melospiza melodia inexspectata
- Melospiza melodia insignis
- Melospiza melodia juddi
- Melospiza melodia kenaiensis
- Melospiza melodia mailliardi
- Melospiza melodia maxillaris
- Melospiza melodia maxima
- Melospiza melodia melodia
- Melospiza melodia merrilli
- Melospiza melodia mexicana
- Melospiza melodia micronyx
- Melospiza melodia montana
- Melospiza melodia morphna
- Melospiza melodia niceae
- Melospiza melodia pusillula
- Melospiza melodia rivularis
- Melospiza melodia rufina
- Melospiza melodia saltonis
- Melospiza melodia samuelis
- Melospiza melodia sanaka
- Melospiza melodia villai
- Melospiza melodia yuriria
- Melozone biarcuata (Prevost’s Ground-Sparrow)
- Melozone biarcuata biarcuata
- Melozone biarcuata cabanisi (Prevost’s Ground-Sparrow (Cabanis’s))
- Melozone kieneri (Rusty-crowned Ground-Sparrow)
- Melozone kieneri kieneri
- Melozone kieneri rubricata (obscurior)
- Melozone leucotis (White-eared Ground-Sparrow)
- Melozone leucotis leucotis
- Melozone leucotis occipitalis
- Nesospiza acunhae (Nightingale Finch)
- Nesospiza acunhae acunhae
- Nesospiza acunhae questi
- Nesospiza wilkinsi (Wilkins’s Finch)
- Nesospiza wilkinsi dunnei
- Nesospiza wilkinsi wilkinsi
- Oreothraupis arremonops (Tanager Finch)
- Oriturus superciliosus (Striped Sparrow)
- Oriturus superciliosus palliatus
- Oriturus superciliosus superciliosus
- Oryzoborus angolensis (Chestnut-bellied Seed-Finch)
- Oryzoborus angolensis angolensis
- Oryzoborus angolensis torridus
- Oryzoborus atrirostris (Black-billed Seed-Finch)
- Oryzoborus atrirostris atrirostris
- Oryzoborus crassirostris (Large-billed Seed-Finch)
- Oryzoborus crassirostris crassirostris
- Oryzoborus crassirostris magnirostris
- Oryzoborus crassirostris occidentalis
- Oryzoborus crassirostris ssp
- Oryzoborus funereus (Thick-billed Seed-Finch)
- Oryzoborus maximiliani (Great-billed Seed-Finch)
- Oryzoborus nuttingi (Nicaraguan Seed-Finch)
- Paroaria baeri (Crimson-fronted Cardinal)
- Paroaria baeri baeri
- Paroaria capitata (Yellow-billed Cardinal)
- Paroaria capitata capitata
- Paroaria coronata (Red-crested Cardinal)
- Paroaria dominicana (Red-cowled Cardinal)
- Paroaria gularis (Red-capped Cardinal)
- Paroaria gularis cervicalis
- Paroaria gularis gularis
- Paroaria gularis nigrogenis
- Passerculus sandwichensis (Savannah Sparrow)
- Passerculus sandwichensis [beldingi Group] (Savannah Sparrow (Belding’s))
- Passerculus sandwichensis [nevadensis Group] (Savannah Sparrow (Western))
- Passerculus sandwichensis [sandwichensis Group] (Savannah Sparrow (Eastern))
- Passerculus sandwichensis alaudinus
- Passerculus sandwichensis anulus
- Passerculus sandwichensis athinus
- Passerculus sandwichensis atratus
- Passerculus sandwichensis beldingi
- Passerculus sandwichensis brooksi
- Passerculus sandwichensis brunnescens
- Passerculus sandwichensis crassus
- Passerculus sandwichensis guttatus
- Passerculus sandwichensis labradorius
- Passerculus sandwichensis magdalenae
- Passerculus sandwichensis mediogriseus
- Passerculus sandwichensis nevadensis
- Passerculus sandwichensis oblitus
- Passerculus sandwichensis princeps (Savannah Sparrow (Ipswich))
- Passerculus sandwichensis rostratus
- Passerculus sandwichensis rostratus/atratus (Savannah Sparrow (Large-billed))
- Passerculus sandwichensis rufofuscus
- Passerculus sandwichensis sanctorum (Savannah Sparrow (San Benito))
- Passerculus sandwichensis sandwichensis
- Passerculus sandwichensis savanna
- Passerculus sandwichensis wetmorei
- Passerella iliaca (Fox Sparrow)
- Passerella iliaca [megarhyncha Group] (Fox Sparrow (Thick-billed))
- Passerella iliaca [schistacea Group] (Fox Sparrow (Slate-colored))
- Passerella iliaca [unalaschcensis Group] (Fox Sparrow (Sooty))
- Passerella iliaca altivagans
- Passerella iliaca annectens
- Passerella iliaca brevicauda
- Passerella iliaca canescens
- Passerella iliaca chilcatensis
- Passerella iliaca fuliginosa
- Passerella iliaca fulva
- Passerella iliaca iliaca
- Passerella iliaca iliaca/zaboria (Fox Sparrow (Red))
- Passerella iliaca megarhyncha
- Passerella iliaca monoensis
- Passerella iliaca olivacea
- Passerella iliaca ridgwayi
- Passerella iliaca schistacea
- Passerella iliaca sinuosa
- Passerella iliaca stephensi
- Passerella iliaca swarthi
- Passerella iliaca townsendi
- Passerella iliaca unalaschensis (insularis)
- Passerella iliaca zaboria
- Pezopetes capitalis (Large-footed Finch)
- Phrygilus alaudinus (Band-tailed Sierra-Finch)
- Phrygilus alaudinus alaudinus
- Phrygilus alaudinus bipartitus
- Phrygilus alaudinus humboldti
- Phrygilus atriceps (Black-hooded Sierra-Finch)
- Phrygilus carbonarius (Carbonated Sierra-Finch)
- Phrygilus dorsalis (Red-backed Sierra-Finch)
- Phrygilus erythronotus (White-throated Sierra-Finch)
- Phrygilus fruticeti (Mourning Sierra-Finch)
- Phrygilus fruticeti coracinus
- Phrygilus fruticeti fruticeti
- Phrygilus fruticeti peruvianus
- Phrygilus gayi (Gray-hooded Sierra-Finch)
- Phrygilus gayi caniceps
- Phrygilus gayi gayi
- Phrygilus gayi minor
- Phrygilus patagonicus (Patagonian Sierra-Finch)
- Phrygilus plebejus (Ash-breasted Sierra-Finch)
- Phrygilus plebejus ocularis
- Phrygilus plebejus plebejus
- Phrygilus punensis (Peruvian Sierra-Finch)
- Phrygilus punensis chloronotus
- Phrygilus punensis punensis
- Phrygilus unicolor (Plumbeous Sierra-Finch)
- Phrygilus unicolor inca
- Phrygilus unicolor unicolor
- Piezorhina cinerea (Cinereous Finch)
- Pinaroloxias inornata (Cocos Island Finch)
- Pipilo aberti (Abert’s Towhee)
- Pipilo aberti aberti
- Pipilo albicollis (White-throated Towhee)
- Pipilo albicollis albicollis
- Pipilo albicollis marshalli
- Pipilo chlorurus (Green-tailed Towhee)
- Pipilo crissalis (California Towhee)
- Pipilo crissalis albigula
- Pipilo crissalis bullatus
- Pipilo crissalis carolae
- Pipilo crissalis crissalis
- Pipilo crissalis eremophilus
- Pipilo crissalis petulans
- Pipilo crissalis senicula
- Pipilo erythrophthalmus (Eastern Towhee)
- Pipilo erythrophthalmus alleni
- Pipilo erythrophthalmus canaster
- Pipilo erythrophthalmus erythrophthalmus
- Pipilo erythrophthalmus rileyi
- Pipilo fuscus (Canyon Towhee)
- Pipilo fuscus fuscus
- Pipilo fuscus intermedius
- Pipilo fuscus jamesi
- Pipilo fuscus mesoleucus
- Pipilo fuscus perpallidus
- Pipilo fuscus potosinus
- Pipilo fuscus texanus
- Pipilo maculatus (Spotted Towhee)
- Pipilo maculatus [maculatus Group] (Spotted Towhee (Rocky Mts.))
- Pipilo maculatus [oregonus Group] (Spotted Towhee (Pacific))
- Pipilo maculatus arcticus
- Pipilo maculatus chiapensis
- Pipilo maculatus clementae
- Pipilo maculatus consobrinus
- Pipilo maculatus curtatus
- Pipilo maculatus falcifer
- Pipilo maculatus falcinellus
- Pipilo maculatus gaigei
- Pipilo maculatus macronyx (Spotted Towhee (Olive-backed))
- Pipilo maculatus maculatus
- Pipilo maculatus magnirostris
- Pipilo maculatus megalonyx
- Pipilo maculatus montanus
- Pipilo maculatus oaxacae
- Pipilo maculatus oregonus
- Pipilo maculatus orientalis
- Pipilo maculatus repetens
- Pipilo maculatus socorroensis (Spotted Towhee (Socorro))
- Pipilo maculatus vulcanorum
- Pipilo ocai (Collared Towhee)
- Pipilo ocai alticola
- Pipilo ocai brunnescens
- Pipilo ocai nigrescens
- Pipilo ocai ocai
- Platyspiza crassirostris (Vegetarian Finch)
- Plectrophenax hyperboreus (McKay’s Bunting)
- Plectrophenax nivalis (Snow Bunting)
- Plectrophenax nivalis insulae
- Plectrophenax nivalis nivalis
- Plectrophenax nivalis townsendi
- Plectrophenax nivalis vlasowae
- Pooecetes gramineus (Vesper Sparrow)
- Pooecetes gramineus affinis
- Pooecetes gramineus confinis
- Pooecetes gramineus gramineus
- Poospiza alticola (Plain-tailed Warbling-Finch)
- Poospiza baeri (Tucuman Mountain-Finch)
- Poospiza boliviana (Bolivian Warbling-Finch)
- Poospiza caesar (Chestnut-breasted Mountain-Finch)
- Poospiza cinerea (Cinereous Warbling-Finch)
- Poospiza erythrophrys (Rusty-browed Warbling-Finch)
- Poospiza erythrophrys erythrophrys
- Poospiza garleppi (Cochabamba Mountain-Finch)
- Poospiza hispaniolensis (Collared Warbling-Finch)
- Poospiza hypochondria (Rufous-sided Warbling-Finch)
- Poospiza hypochondria affinis
- Poospiza hypochondria hypochondria
- Poospiza lateralis (Red-rumped Warbling-Finch)
- Poospiza lateralis cabanisi
- Poospiza lateralis lateralis
- Poospiza melanoleuca (Black-capped Warbling-Finch)
- Poospiza nigrorufa (Black-and-rufous Warbling-Finch)
- Poospiza nigrorufa nigrorufa (Black-and-rufous Warbling-Finch (Black-and-rufous))
- Poospiza nigrorufa wagneri
- Poospiza nigrorufa whitii
- Poospiza ornata (Cinnamon Warbling-Finch)
- Poospiza rubecula (Rufous-breasted Warbling-Finch)
- Poospiza thoracica (Bay-chested Warbling-Finch)
- Poospiza torquata (Ringed Warbling-Finch)
- Poospiza torquata pectoralis
- Poospiza torquata torquata
- Porphyrospiza caerulescens (Blue Finch)
- Pselliophorus luteoviridis (Yellow-green Finch)
- Pselliophorus tibialis (Yellow-thighed Finch)
- Rhodospingus cruentus (Crimson-breasted Finch)
- Rowettia goughensis (Gough Island Finch)
- Sicalis auriventris (Greater Yellow-Finch)
- Sicalis citrina (Stripe-tailed Yellow-Finch)
- Sicalis citrina browni
- Sicalis citrina citrina
- Sicalis citrina occidentalis
- Sicalis columbiana (Orange-fronted Yellow-Finch)
- Sicalis columbiana columbiana
- Sicalis columbiana goeldii
- Sicalis flaveola (Saffron Finch)
- Sicalis flaveola brasiliensis
- Sicalis flaveola flaveola
- Sicalis flaveola pelzelni
- Sicalis flaveola valida
- Sicalis lebruni (Patagonian Yellow-Finch)
- Sicalis lutea (Puna Yellow-Finch)
- Sicalis luteocephala (Citron-headed Yellow-Finch)
- Sicalis luteola (Grassland Yellow-Finch)
- Sicalis luteola bogotensis
- Sicalis luteola chrysops
- Sicalis luteola eisenmanni
- Sicalis luteola luteiventris
- Sicalis luteola luteola
- Sicalis luteola mexicana
- Sicalis olivascens (Greenish Yellow-Finch)
- Sicalis olivascens chloris
- Sicalis olivascens mendozae
- Sicalis olivascens olivascens
- Sicalis olivascens salvini
- Sicalis raimondii (Raimondi’s Yellow-Finch)
- Sicalis taczanowskii (Sulphur-throated Finch)
- Sicalis uropygialis (Bright-rumped Yellow-Finch)
- Sicalis uropygialis connectens
- Sicalis uropygialis sharpei
- Sicalis uropygialis uropygialis
- Spizella arborea (American Tree Sparrow)
- Spizella arborea arborea
- Spizella atrogularis (Black-chinned Sparrow)
- Spizella atrogularis atrogularis
- Spizella atrogularis cana
- Spizella atrogularis caurina
- Spizella atrogularis evura
- Spizella breweri (Brewer’s Sparrow)
- Spizella breweri breweri (Brewer’s Sparrow (breweri))
- Spizella breweri taverneri (Brewer’s Sparrow (Timberline))
- Spizella pallida (Clay-colored Sparrow)
- Spizella passerina (Chipping Sparrow)
- Spizella passerina passerina
- Spizella passerina pinetorum
- Spizella pusilla (Field Sparrow)
- Spizella pusilla arenacea
- Spizella pusilla pusilla
- Spizella wortheni (Worthen’s Sparrow)
- Sporophila albogularis (White-throated Seedeater)
- Sporophila americana (Wing-barred Seedeater)
- Sporophila americana americana
- Sporophila americana dispar
- Sporophila ardesiaca (Dubois’s Seedeater)
- Sporophila bouvreuil (Capped Seedeater)
- Sporophila bouvreuil bouvreuil
- Sporophila bouvreuil crypta
- Sporophila bouvreuil pileata
- Sporophila bouvreuil saturata
- Sporophila bouvronides (Lesson’s Seedeater)
- Sporophila bouvronides bouvronides
- Sporophila caerulescens (Double-collared Seedeater)
- Sporophila caerulescens caerulescens
- Sporophila caerulescens hellmayri
- Sporophila caerulescens yungae
- Sporophila castaneiventris (Chestnut-bellied Seedeater)
- Sporophila cinnamomea (Chestnut Seedeater)
- Sporophila collaris (Rusty-collared Seedeater)
- Sporophila collaris collaris
- Sporophila collaris melanocephala
- Sporophila corvina (Variable Seedeater)
- Sporophila corvina hoffmannii (collaris)
- Sporophila corvina ophthalmica
- Sporophila falcirostris (Temminck’s Seedeater)
- Sporophila frontalis (Buffy-fronted Seedeater)
- Sporophila hypochroma (Gray-and-chestnut Seedeater)
- Sporophila hypoxantha (Tawny-bellied Seedeater)
- Sporophila intermedia (Gray Seedeater)
- Sporophila intermedia intermedia
- Sporophila leucoptera (White-bellied Seedeater)
- Sporophila leucoptera bicolor
- Sporophila leucoptera cinereola
- Sporophila leucoptera leucoptera
- Sporophila lineola (Lined Seedeater)
- Sporophila lineola lineola
- Sporophila lineola ssp
- Sporophila luctuosa (Black-and-white Seedeater)
- Sporophila melanogaster (Black-bellied Seedeater)
- Sporophila minuta (Ruddy-breasted Seedeater)
- Sporophila minuta centralis
- Sporophila minuta minuta
- Sporophila minuta parva
- Sporophila murallae (Caqueta Seedeater)
- Sporophila nigricollis (Yellow-bellied Seedeater)
- Sporophila nigricollis inconspicua
- Sporophila nigricollis nigricollis
- Sporophila nigricollis vivida
- Sporophila nigrorufa (Black-and-tawny Seedeater)
- Sporophila palustris (Marsh Seedeater)
- Sporophila peruviana (Parrot-billed Seedeater)
- Sporophila peruviana peruviana
- Sporophila plumbea (Plumbeous Seedeater)
- Sporophila plumbea colombiana
- Sporophila plumbea plumbea
- Sporophila ruficollis (Dark-throated Seedeater)
- Sporophila schistacea (Slate-colored Seedeater)
- Sporophila schistacea incerta
- Sporophila schistacea longipennis
- Sporophila schistacea schistacea
- Sporophila simplex (Drab Seedeater)
- Sporophila telasco (Chestnut-throated Seedeater)
- Sporophila torqueola (White-collared Seedeater)
- Sporophila torqueola [morelleti Group] (White-collared Seedeater (White-collared))
- Sporophila torqueola morelleti
- Sporophila torqueola mutanda
- Sporophila torqueola sharpei
- Sporophila torqueola torqueola (White-collared Seedeater (Cinnamon-rumped))
- Sporophila zelichi (Narosky’s Seedeater)
- Tiaris bicolor (Black-faced Grassquit)
- Tiaris bicolor bicolor
- Tiaris bicolor grandior
- Tiaris bicolor johnstonei
- Tiaris bicolor marchii
- Tiaris bicolor omissus
- Tiaris bicolor sharpei
- Tiaris canorus (Cuban Grassquit)
- Tiaris fuliginosus (Sooty Grassquit)
- Tiaris obscurus (Dull-colored Grassquit)
- Tiaris obscurus obscurus
- Tiaris obscurus pacificus
- Tiaris obscurus pauper
- Tiaris olivaceus (Yellow-faced Grassquit)
- Tiaris olivaceus bryanti
- Tiaris olivaceus intermedius
- Tiaris olivaceus olivaceus
- Tiaris olivaceus pusillus
- Tiaris olivaceus ravidus
- Torreornis inexpectata (Zapata Sparrow)
- Torreornis inexpectata inexpectata
- Torreornis inexpectata sigmani
- Torreornis inexpectata varonai
- Volatinia jacarina (Blue-black Grassquit)
- Volatinia jacarina jacarina
- Volatinia jacarina peruviensis
- Volatinia jacarina splendens
- Xenospingus concolor (Slender-billed Finch)
- Xenospiza baileyi (Sierra Madre Sparrow)
- Zonotrichia albicollis (White-throated Sparrow)
- Zonotrichia atricapilla (Golden-crowned Sparrow)
- Zonotrichia capensis (Rufous-collared Sparrow)
- Zonotrichia capensis antillarum
- Zonotrichia capensis antofagastae
- Zonotrichia capensis australis
- Zonotrichia capensis capensis
- Zonotrichia capensis chilensis
- Zonotrichia capensis costaricensis
- Zonotrichia capensis hypoleuca
- Zonotrichia capensis insularis
- Zonotrichia capensis matutina
- Zonotrichia capensis mellea
- Zonotrichia capensis novaesi
- Zonotrichia capensis peruviensis
- Zonotrichia capensis pulacayensis
- Zonotrichia capensis roraimae
- Zonotrichia capensis sanborni
- Zonotrichia capensis septentrionalis
- Zonotrichia capensis subtorquata
- Zonotrichia capensis venezuelae
- Zonotrichia leucophrys (White-crowned Sparrow)
- Zonotrichia leucophrys gambelii (White-crowned Sparrow (Gambel’s))
- Zonotrichia leucophrys leucophrys (White-crowned Sparrow (Eastern))
- Zonotrichia leucophrys nuttalli (White-crowned Sparrow (Nuttall’s))
- Zonotrichia leucophrys oriantha (White-crowned Sparrow (Mountain))
- Zonotrichia leucophrys pugetensis (White-crowned Sparrow (Puget Sound))
- Zonotrichia querula (Harris’s Sparrow)