The full hybrid index was compiled mostly using eBird and Avian Hybrids. Some hybrids listed by these sources don’t have photos or information online that I was able to track down, which is why some of these taxa don’t have individual sections in the guide dedicated to them. Contributions for these taxa especially are extremely helpful, but information on nearly all hybrids is lacking so any information or media is important. If you notice any errors or have something to contribute please leave a comment or send me a message.

Compiling a list of all known hybrids with examples is difficult for several reasons. Obviously I'm not able to obtain permission to embed all media of these hybrids on a single web page/journal post. This means I'm relying on countless other sites to continue to host said media for the foreseeable future. This will inevitably lead to broken links and lost media. Uploading to sites like iNat and eBird can hopefully prevent this.

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Index:

**Ovenbird (Seiurus)**

Ovenbird (Seiurus aurocapilla )

**Worm-eating Warbler(Helmitheros)**

Worm-eating Warbler(Helmitheros vermivorum)

**Waterthrushes(Parkesia)**

Louisiana Waterthrush(Parkesia motacilla)
Northern Waterthrush(Parkesia noveboracensis)

**Golden-winged and Blue-winged Warblers(Vermivora)**

Golden-winged Warbler(Vermivora chrysoptera)

Golden-winged x Blue-winged Warbler

Blue-winged Warbler(Vermivora cyanoptera)

Blue-winged x Golden-winged Warbler

Blue-winged x Kentucky Warbler

Blue-winged x Cerulean Warbler

Blue-winged x Prairie Warbler

**Black-and-white Warbler(Mniotilta)**

Black-and-white Warbler(Mniotilta varia)

Black-and-white x Cerulean Warbler

Black-and-white x Blackburnian Warbler

Black-and-white x Yellow-rumped Warbler

**Prothonotary Warbler(Protonotaria)**

Prothonotary Warbler(Protonotaria citrea)

**Swainson's Warbler(Limnothlypis)**

Swainson's Warbler(Limnothlypis swainsonii)

**Crescent-chested and Flame-throated Warblers(Oreothlypis)**

Crescent-chested Warbler(Oreothlypis superciliosa)
Flame-throated Warbler(Oreothlypis gutturalis)

**Leiothlypis Warblers(Leiothlypis)**

Tennessee Warbler(Leiothlypis peregrina)

Tennessee x Nashville Warbler

Orange-crowned Warbler(Leiothlypis celata)

Orange-crowned x Nashville Warbler

Colima Warbler(Leiothlypis crissalis)

Colima x Virginia's Warbler

Lucy's Warbler(Leiothlypis luciae)
Nashville Warbler(Leiothlypis ruficapilla)

Nashville x Tennessee Warbler

Nashville x Orange-crowned Warbler

Nashville x Magnolia Warbler

Virginia's Warbler(Leiothlypis virginiae)

Virginia's x Colima Warbler

**Connecticut Warbler(Oporornis)**

Connecticut Warbler(Oporornis agilis)

Connecticut x Mourning Warbler

**Yellowthroats and Allies(Geothlypis)**

Gray-crowned Yellowthroat(Geothlypis poliocephala)

Gray-crowned x Common Yellowthroat

Masked Yellowthroat(Geothlypis aequinoctialis)
Black-lored Yellowthroat(Geothlypis auricularis)
Southern Yellowthroat(Geothlypis velata)
MacGillivray's Warbler(Geothlypis tolmiei)

MacGillivray's x Mourning Warbler

MacGillivray's Warbler x Common Yellowthroat

Mourning Warbler(Geothlypis philadelphia)

Mourning x Connecticut Warbler

Mourning x MacGillivray's Warbler

Mourning x Kentucky Warbler

Mourning Warbler x Common Yellowthroat

Kentucky Warbler(Geothlypis formosa)

Kentucky x Blue-winged Warbler

Kentucky x Mourning Warbler

Kentucky Warbler x Common Yellowthroat

Olive-crowned Yellowthroat(Geothlypis semiflava)
Black-polled Yellowthroat(Geothlypis speciosa)
Belding's Yellowthroat(Geothlypis beldingi)
Bahama Yellowthroat(Geothlypis rostrata)
Altamira Yellowthroat(Geothlypis flavovelata)
Common Yellowthroat(Geothlypis trichas)

Common x Gray-crowned Yellowthroat

Common Yellowthroat x MacGillivray's Warbler

Common Yellowthroat x Mourning Warbler

Common Yellowthroat x Kentucky Warbler

Common Yellowthroat x Yellow Warbler

Common Yellowthroat x Rufous-capped Warbler

Hooded Yellowthroat(Geothlypis nelsoni)

**Whistling Warbler(Catharopeza)**

Whistling Warbler(Catharopeza bishopi)

**Setophaga Warblers(Setophaga)**

Plumbeous Warbler(Setophaga plumbea)
Elfin-woods Warbler(Setophaga angelae)
Arrowhead Warbler(Setophaga pharetra)
Hooded Warbler(Setophaga citrina)

Hooded x Yellow Warbler

American Redstart(Setophaga ruticilla)

American Redstart x Northern Parula

American Redstart x Magnolia Warbler

American Redstart x Yellow Warbler

Kirtland's Warbler(Setophaga kirtlandii)

Kirtland's x Blackburnian Warbler

Cape May Warbler(Setophaga tigrina)

Cape May x Magnolia Warbler

Cape May x Yellow-rumped Warbler

Cerulean Warbler(Setophaga cerulea)

Cerulean x Blue-winged Warbler

Cerulean x Black-and-white Warbler

Cerulean Warbler x Northern Parula

Cerulean x Black-throated Blue Warbler

Northern Parula(Setophaga americana)

Northern Parula x American Redstart

Northern Parula x Cerulean Warbler

Northern x Tropical Parula

Northern Parula x Yellow-throated Warbler

Tropical Parula(Setophaga pitiayumi)

Tropical x Northern Parula

Magnolia Warbler(Setophaga magnolia)

Magnolia x Nashville Warbler

Magnolia Warbler x American Redstart

Magnolia x Chestnut-sided Warbler

Magnolia x Black-throated Blue Warbler

Magnolia x Palm Warbler

Magnolia x Yellow-rumped Warbler

Bay-breasted Warbler(Setophaga castanea)

Bay-breasted x Blackburnian Warbler

Bay-breasted x Blackpoll Warbler

Blackburnian Warbler(Setophaga fusca)

Blackburnian x Black-and-white Warbler

Blackburnian x Kirtland's Warbler

Blackburnian x Bay-breasted Warbler

Yellow Warbler(Setophaga petechia)

Yellow Warbler x Common Yellowthroat

Yellow x Hooded Warbler

Yellow Warbler x American Redstart

Yellow x Black-throated Blue Warbler

Yellow x Prairie Warbler

Chestnut-sided Warbler(Setophaga pensylvanica)

Chestnut-sided x Magnolia Warbler

Chestnut-sided x Black-throated Blue Warbler

Blackpoll Warbler(Setophaga striata)

Blackpoll x Bay-breasted Warbler

Black-throated Blue Warbler(Setophaga caerulescens)

Black-throated Blue x Cerulean Warbler

Black-throated Blue x Magnolia Warbler

Black-throated Blue x Yellow Warbler

Black-throated Blue x Chestnut-sided Warbler

Palm Warbler(Setophaga palmarum)

Palm x Magnolia Warbler

Palm x Yellow-rumped Warbler

Olive-capped Warbler(Setophaga pityophila)
Pine Warbler(Setophaga pinus)

Pine x Yellow-throated Warbler

Yellow-rumped Warbler(Setophaga coronata)

Yellow-rumped x Black-and-white Warbler

Yellow-rumped x Cape May Warbler

Yellow-rumped x Magnolia Warbler

Yellow-rumped x Palm Warbler

Yellow-rumped x Yellow-throated Warbler

Yellow-rumped x Grace's Warbler

Yellow-rumped x Black-throated Gray Warbler

Yellow-rumped x Townsend's Warbler

Yellow-rumped x Hermit Warbler

Yellow-rumped x Black-throated Green Warbler

Yellow-throated Warbler(Setophaga dominica)

Yellow-throated Warbler x Northern Parula

Yellow-throated x Pine Warbler

Yellow-throated x Yellow-rumped Warbler

Bahama Warbler(Setophaga flavescens)
Vitelline Warbler(Setophaga vitellina)
Prairie Warbler(Setophaga discolor)

Prairie x Blue-winged Warbler

Prairie x Yellow Warbler

Adelaide's Warbler(Setophaga adelaidae)
Barbuda Warbler(Setophaga subita)
St. Lucia Warbler(Setophaga delicata)
Grace's Warbler(Setophaga graciae)

Grace's x Yellow-rumped Warbler

Grace's x Black-throated Gray Warbler

Black-throated Gray Warbler(Setophaga nigrescens)

Black-throated Gray x Grace's Warbler

Black-throated Gray x Townsend's Warbler

Black-throated Gray x Hermit Warbler

Townsend's Warbler(Setophaga townsendi)

Townsend's x Yellow-rumped Warbler

Townsend's x Black-throated Gray Warbler

Townsend's x Hermit Warbler

Townsend's x Black-throated Green Warbler

Hermit Warbler(Setophaga occidentalis)

Hermit x Yellow-rumped Warbler

Hermit x Black-throated Gray Warbler

Hermit x Townsend's Warbler

Golden-cheeked Warbler(Setophaga chrysoparia)
Black-throated Green Warbler(Setophaga virens)

Black-throated Green x Yellow-rumped Warbler

Black-throated Green x Townsend's Warbler

**Basileuterus Warblers(Basileuterus )**

Fan-tailed Warbler(Basileuterus lachrymosus)
Rufous-capped Warbler(Basileuterus rufifrons)

Rufous-capped Warbler x Common Yellowthroat

Chestnut-capped Warbler(Basileuterus delattrii)
Black-cheeked Warbler(Basileuterus melanogenys)
Pirre Warbler(Basileuterus ignotus)
Golden-browed Warbler(Basileuterus belli)
Golden-crowned Warbler(Basileuterus culicivorus)

Golden-crowned x Flavescent Warbler

Costa Rican Warbler(Basileuterus melanotis)
Tacarcuna Warbler(Basileuterus tacarcunae)
Three-striped Warbler(Basileuterus tristriatus)
Yungas Warbler(Basileuterus punctipectus)
Three-banded Warbler(Basileuterus trifasciatus)

**Myiothlypis Warblers(Myiothlypis )**

Gray-headed Warbler(Myiothlypis griseiceps)
Santa Marta Warbler(Myiothlypis basilica)
Citrine Warbler(Myiothlypis luteoviridis)
White-striped Warbler(Myiothlypis leucophrys)
Flavescent Warbler(Myiothlypis flaveola)

Flavescent x Golden-crowned Warbler

White-browed Warbler(Myiothlypis leucoblephara)
Pale-legged Warbler(Myiothlypis signata)
Black-crested Warbler(Myiothlypis nigrocristata)
Buff-rumped Warbler(Myiothlypis fulvicauda)
Riverbank Warbler(Myiothlypis rivularis)
Two-banded Warble(Myiothlypis bivittata)
Cuzco Warbler(Myiothlypis chrysogaster)
Choco Warbler(Myiothlypis chlorophrys)
Gray-throated Warbler(Myiothlypis cinereicollis)
White-lored Warbler(Myiothlypis conspicillata)
Gray-and-gold Warbler(Myiothlypis fraseri)
Russet-crowned Warbler(Myiothlypis coronata)

**Cardellina Warblers (Cardellina)**

Canada Warbler(Cardellina canadensis)
Wilson's Warbler(Cardellina pusilla)
Red-faced Warbler(Cardellina rubrifrons)
Red Warbler(Cardellina rubra)
Pink-headed Warbler(Cardellina versicolor)

**Whitestarts (Myioborus)**

Painted Redstart (Myioborus pictus)

Painted x Slate-throated Redstart

Slate-throated Redstart (Myioborus miniatus)

Slate-throated x Painted Redstart

Brown-capped Redstart(Myioborus brunniceps)
Tepui Redstart(Myioborus castaneocapilla)
Paria Redstart(Myioborus pariae)
Saffron-breasted Redstart(Myioborus cardonai)
White-faced Redstart(Myioborus albifacies)
Collared Redstart(Myioborus torquatus)
Yellow-crowned Redstart(Myioborus flavivertex)
Golden-fronted Redstart(Myioborus ornatus)

Golden-fronted x Spectacled Redstart

Spectacled Redstart(Myioborus melanocephalus)

Spectacled x Golden-fronted Redstart

White-fronted Redstart(Myioborus albifrons)

Tri-species & Misc Hybrids

Brewster's x Chestnut-sided Warbler

Hybrid Accounts:

**Golden-winged x Blue-winged Warbler (Vermivora chrysoptera x cyanoptera)**

Other names: Brewster's Warbler (Specific phenotype), Lawrence's Warbler (Specific phenotype)

eBird
eBird (Brewster's)
eBird (Lawrence's)
iNat

Probably the most well-studied Parulid hybrid. Plenty of info online.
https://macaulaylibrary.org/asset/165160151
https://macaulaylibrary.org/asset/358764431
https://macaulaylibrary.org/asset/28595451
https://macaulaylibrary.org/asset/549927071 (Lawrence's)
https://macaulaylibrary.org/asset/459278441 (Brewster's)

Paper
Info

Note: Certain traits such as yellow wing bars can persist through introgression long after any hybridization and in many cases don't necessarily indicate recent hybridization: https://sora.unm.edu/sites/default/files/journals/auk/v097n01/p0001-p0018.pdf