WATERFOWL (Order Anseriformes, Family Anatidae)
Snow x Ross’s Goose (Anser caerulescens x rossii)
Snow x Cackling Goose (Anser caerulescens x Branta hutchinsii)
Snow x Canada Goose (Anser caerulescens x Branta canadensis)
Ross’s Goose x Cackling Goose (Anser rossii x Branta hutchinsii)
Ross’s x Canada Goose (Anser rossii x Branta canadensis)
Greater White-fronted x Cackling Goose (Anser albifrons x Branta hutchinsii)
Greater White-fronted x Canada Goose (Anser albifrons x Branta canadensis)
Swan Goose (domestic type) x Graylag Goose (domestic type) (Anser anser x cygnoides)
Swan/Graylag Goose (domestic type) x Canada Goose (Anser cygnoides x anser) x Branta canadensis)
Barnacle x Cackling Goose (Branta leucopsis x hutchinsii)
Muscovy Duck (domestic type) x Mallard (Cairina moschata x Anas platyrhynchos)
Blue-winged x Cinnamon Teal (Spatula discors x cyanoptera)
Blue-winged Teal x Northern Shoveler (Spatula discors x clypeata)
Blue-winged x Green-winged Teal (Spatula discors x Anas crecca)
Cinnamon Teal x Northern Shoveler (Spatula cyanoptera x clypeata)
Northern Shoveler x Gadwall (Spatula clypeata x Mareca strepera)
Gadwall x Mallard (Mareca strepera x Anas platyrhynchos)
Eurasian x American Wigeon (Mareca penelope x americana)
American Wigeon x Mallard (Mareca americana x Anas platyrhynchos)
Mallard x American Black Duck (Anas platyrhynchos x rubripes)
Mallard x Mexican Duck (Anas platyrhynchos x diaza)
Mallard x Northern Pintail (Anas platyrhynchos x acuta)
Canvasback x Redhead (Aythya valisineria x americana)
Redhead x Ring-necked Duck (Aythya americana x collaris)
Ring-necked Duck x Greater Scaup (Aythya collaris x marila)
Ring-necked Duck x Lesser Scaup (Aythya collaris x affinis)
Ring-necked x Tufted Duck (Aythya collaris x fuligula)
Tufted Duck x Lesser Scaup (Aythya fuligula x affinis)
Bufflehead x Common Goldeneye (Bucephala albeola x clangula)
Common x Barrow’s Goldeneye (Bucephala clangula x islandica)
Common Goldeneye x Hooded Merganser (Bucephala clangula x Lophodytes cucullatus)
PARTRIDGES, GROUSE, TURKEY, & OLD WORLD QUAIL (Order Galliformes, Family Phasianidae)
Sharp-tailed Grouse x Greater Prairie-Chicken (Tympanuchus phasianellus x cupido)
GREBES (Order Podicipediformes, Family Podicipedidae)
Western x Clark’s Grebe (Aechmophorus occidentalis x clarkii)
PIGEONS & DOVES (Order Columbiformes, Family Columbidae)
Eurasian Collared-Dove x Mourning Dove (Streptopelia decaocto x Zenaida macroura)
HUMMINGBIRDS (Order Apodiformes, Family Trochilidae)
Broad-tailed x Ruby-throated Hummingbird (Selasphorus platycercus x Archilochus colubris)
CRANES (Order Gruiformes, Family Gruidae)
Sandhill x Common Crane (Antigone canadensis x Grus grus)
GULLS, TERNS, & SKIMMERS (Order Charadriiformes, Family Laridae)
Herring x Glaucous-winged Gull (Larus argentatus x glaucescens)
Herring X Glaucous Gull (Larus argentatus x hyperboreus)
CORMORANTS (Order Suliformes, Family Phalacrocoracidae)
Neotropic x Double-crested Cormorant (Phalacrocorax auritus x brasilianus)
IBISES & SPOONBILLS (Order Pelecaniformes, Family Threskiornithidae)
Glossy x White-faced Ibis (Plegadis falcinellus x chihi)
WOODPECKERS & ALLIES (Order Piciformes, Family Picidae)
Yellow-bellied x Red-naped Sapsucker (Sphyrapicus varius x nuchalis)
Downy x Hairy Woodpecker (Dryobates pubescens x villosus)
TYRANT FLYCATCHERS (Order Passeriformes, Family Tyrannidae)
Western x Eastern Wood-Pewee (Contopus sordidulus x virens)]
[Western Kingbird x Scissor-tailed Flycatcher] (Tyrannus verticalis x forficatus)]
VIREOS (Order Passeriformes, Family Vireonidae)
Yellow-throated x Blue-headed Vireo (Vireo flavifrons x solitarius)
CHICKADEES & TITMICE (Order Passeriformes, Family Paridae)
[Black-capped x Mountain Chickadee] (Poecile atricapillus x gambeli)]
THRUSHES (Order Passeriformes, Family Turdidae)
Eastern x Mountain Bluebird (Sialia sialis x currucoides)
TOWHEES & NEW WORLD SPARROWS (Order Passeriformes, Family Passerellidae)
Spotted x Eastern Towhee (Pipilo maculatus x erythrophthalmus)
BLACKBIRDS, BOBOLINKS, MEADOWLARKS, & ORIOLES (Order Passeriformes, Family Icteridae)
Eastern x Western Meadowlark (Sturnella magna x neglecta)
Bullock’s x Baltimore Oriole (Icterus bullockii x galbula)
WOOD-WARBLERS (Order Passeriformes, Family Parulidae)
Golden-winged x Blue-winged Warbler (Vermivora chrysoptera x cyanoptera)
Myrtle x Audubon’s Warbler (Setophaga coronata x auduboni)
Townsend’s x Black-throated Green Warbler (Setophaga townsendi x virens)
CARDINALS, GROSBEAKS, & NEW WORLD BUNTINGS (Order Passeriformes, Family Cardinalidae)
Summer x Scarlet Tanager (Piranga rubra x olivacea)
Rose-breasted x Black-headed Grosbeak (Pheucticus ludovicianus x melanocephalus)
Lazuli x Indigo Bunting (Passerina amoena x cyanea)
