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Bird Checklists of the United States

Bill Williams River National Wildlife Refuge

Parker, Arizona


Since the 1930's the large cottonwood-willow forests along the lower Colorado River have largely disappeared. The Bill Williams River National Wildlife Refuge contains the last extensive native riparian habitat in the Lower Colorado River Valley. For many species of birds this is the only habitat remaining in the area for breeding; for others, it is a vital stopover during migration. The refuge is also home for the largest populations of many resident birds found in the valley. Habitats found on the refuge include desert uplands, marshes, riparian forests, and the open water of the delta. The diversity and uniqueness of the Bill Williams River NWR provides visitors with a rewarding birding experience.

Neotropical migrant landbirds are those species of landbirds that nest in the United States or Canada, and spend the winter primarily south of our border in Mexico, Central or South America, or in the Caribbean. Many of them, including conspicuous or colorful hawks, hummingbirds, warblers, and tanagers, and less colorful but no less important flycatchers, thrushes, and vireos, are experiencing population declines due to widespread loss of habitats important for their survival. Preservation of many different habitats for nesting, wintering, and migratory stopover sites is becoming vital for the survival of many of these birds. The Neotropical migrant landbirds that occur on this refuge are identified with a "#".

During spring and summer, most neotropical breeding and migrating birds utilize the riparian habitat along the river; during fall and winter many residents species can be found here. The delta and surrounding marshes are good areas to look for ducks during winter months. These marshes are also habitat for the endangered Yuma Clapper Rail. Grebes, herons, and egrets can be seen here year-round.

This list was developed using refuge records and information obtained from Birds of the Lower Colorado River Valley by Rosenberg et al. and published by the University of Arizona Press (1991). This is an excellent source for additional information on birds of the area. The 288 species are listed in accordance with the sixth edition (1983) A.O. U. checklist.


Seasonal status and abundance are coded as follows:

* - nesting species
# - neotropical migrant

5 - abundant and easily seen
4 - common but in moderate numbers, frequently seen
3 - occasionally present in small numbers and difficult to see
2 - rare, hard to find
1 - extremely lucky sighting


LOONS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Common Loon |33|33|33|32|22| | | | |22|33|33| ___ Pacific Loon |11|11|11|11| | | | | | |11|11|
GREBES |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Pied-billed Grebe* |44|44|44|44|44|33|33|33|33|34|44|44| ___ Horned Grebe |22|22|22|2 | | | | | | 2|22|22| ___ Eared Grebe |33|33|33|33|32|22|22|22|33|33|33|33| ___ Western Grebe* |44|44|44|33|33|33|33|33|33|33|44|44| ___ Clark's Grebe* |55|55|55|55|55|33|33|33|33|33|55|55|
PELICANS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ American White Pelican |33|33|33|33|33|32|22|22|23|33|33|33|
CORMORANTS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Double-crested Cormorant* |55|55|55|55|55|44|44|44|45|55|55|55|
BITTERNS, HERONS & EGRETS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ American Bittern* |33|33|33|3 | | | | |33|33|33|33| ___ Least Bittern* |22|23|33|44|44|44|44|44|44|32|22|22| ___ Great Blue Heron* |44|44|44|44|44|44|44|44|44|44|44|44| ___ Great Egret* |44|44|44|44|44|44|44|44|44|44|44|44| ___ Snowy Egret* |44|44|44|44|44|44|44|44|44|44|44|44| ___ Green Heron* |33|33|34|44|44|44|44|44|43|33|33|33| ___ Black-crowned Night-Heron* |33|33|33|33|33|33|33|33|33|33|33|33|
IBISES |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ White-faced Ibis |22|23|33|33|32|22|33|33|32|22| | |
DUCKS, GEESE & SWANS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Greater White-fronted Goose |22|22|22|22|22|22|22|22|33|33|22|22| ___ Snow Goose |11|11|11|11| | | | | |11|11|11| ___ Canada Goose |44|32|2 | | | | | |22|23|44|44| ___ Wood Duck |22|22| | | | | | | 2|22|22|22| ___ Green-winged Teal |33|33|33| | | | | 3|33|33|33|33| ___ Mallard* |44|43|32|22|21|11|11|11|22|22|24|44| ___ Northern Pintail |22|22| | | | | |22|22|22|22|22| ___ Blue-winged Teal | |22|22|22|22|2 | | | | | | | ___ Cinnamon Teal |22|22|22|22|22|22|22|22|22|22|22|22| ___ Northern Shoveler |33|33|33| | | | | 3|33|33|33|33| ___ Gadwall |33|33|33|31|11|11|11|11|33|33|33|33| ___ American Wigeon |33|32|22|2 | | | | 2|22|22|33|33| ___ Canvasback |22|22|22|2 | | | | | | |22|22| ___ Redhead |22|22|22|22|11|11|11|11|11|22|22|22| ___ Ring-necked Duck |33|33|33|3 | | | | | | 3|33|33| ___ Greater Scaup |22|22|22|2 | | | | | | | 2|22| ___ Lesser Scaup |22|22|33|33| | | | | | 2|33|33| ___ Common Goldeneye |44|43|32| | | | | | | |34|44| ___ Bufflehead |44|43|32|2 | | | | | |24|44|44| ___ Hooded Merganser |11|11|11| | | | | | | |11|11| ___ Common Merganser |44|43|32|22| | | | | |22|33|44| ___ Red-breasted Merganser |22|23|33|33|33|11|11|11|11|11|33|22| ___ Ruddy Duck |33|33|33|33|11|11|11|12|22|22|22|22|
VULTURES |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Turkey Vulture*# |33|35|55|54|44|44|44|44|55|55|33|33|
KITES, EAGLES & HAWKS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Osprey# |33|33|34|44|33|22|22|22|44|33|33|33| ___ Bald Eagle# |33|33|31|11|11|11|11|11|11|11|12|22| ___ Northern Harrier# |55|55|54|43|22|11|11|23|45|55|55|55| ___ Sharp-shinned Hawk# |44|44|44|43| | | | |34|44|44|44| ___ Cooper's Hawk*# |44|44|44|43|2 | | |23|44|44|44|44| ___ Common Black-Hawk# | | |11|11|11|11|11|11|11| | | | ___ Swainson's Hawk# | | |33|33|3 | | 2|23|33|33|2 | | ___ Zone-tailed Hawk# | | | |11|11|11|11| | | | | | ___ Red-tailed Hawk*# |55|55|44|43|33|33|33|34|55|55|55|55| ___ Golden Eagle# |11|11|11|11|11|11|11|11|11|11|11|11|
FALCONS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ American Kestrel*# |55|55|54|43|33|33|33|33|45|55|55|55| ___ Merlin# |22|22|22|2 | | | | |22|22|22|22| ___ Peregrine Falcon# |22|22|22|22|11|11|11|11|12|22|22|22| ___ Prairie Falcon# |33|33|11|11|22|22|22|22|33|33|33|33|
PHEASANTS & QUAILS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Gambel's Quail* |55|55|55|55|55|55|55|55|55|55|55|55|
RAILS, GALLINULES & COOTS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Black Rail* |11|11|11|11|11|11|11|11|11|11|11|11| ___ Yuma Clapper Rail* |11|11|22|22|22|22|22|22|11|11|11|11| ___ Virginia Rail* |44|44|44|44|33|33|33|33|34|44|44|44| ___ Sora |44|44|44|43|22|11|11|34|44|44|44|44| ___ Common Moorhen* |44|44|44|44|44|44|44|44|44|44|44|44| ___ American Coot* |55|55|55|44|44|44|44|44|55|55|55|55|
PLOVERS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Black-bellied Plover | | | |11|11|11|11|11|11|11| | | ___ Snowy Plover |11|11|12|22|22|2 |22|22|21|11|11|11| ___ Semipalmated Plover | | | | 2|22| | | 1| | 1| | | ___ Killdeer*# |55|55|55|55|55|44|44|45|55|55|55|55|
STILTS & AVOCETS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Black-necked Stilt | | | |33| | | 3|33|3 | | | | ___ American Avocet | | | |33| |33|33|33|33|33|33| |
SANDPIPERS, PHALAROPES & ALLIES |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Greater Yellowlegs |22|22|23|3 | | |33|33|32|22|22|22| ___ Lesser Yellowlegs | | | |22| | |11|11|11|11|11|11| ___ Solitary Sandpiper | | | |22| | | |22|2 | | | | ___ Willet | | | | 2|2 | |22|22| | | | | ___ Spotted Sandpiper |33|33|33|32|22| | 2|23|33|33|33|33| ___ Long-billed Curlew# | | |11|11| | 1| 1| |11| | | | ___ Marbled Godwit | | | 1|11| | |11|11|11| | | | ___ Western Sandpiper | | | 2|22|2 | |22|22|22| | | | ___ Least Sandpiper |44|44|44|33| | |33|44|44|44|44|44| ___ Baird's Sandpiper | | | | | | | |22|22| | | | ___ Dunlin |22|22| | | | | | | | 2|22|22| ___ Long-billed Dowitcher | | | | | | | | 2|22|22|22|2 | ___ Common Snipe |44|44|44|43| | | | 3|34|44|44|44| ___ Wilson's Phalarope | | | | 2| | 2|22|22|22|22|22| | ___ Red-necked Phalarope | | | | |2 | | |22|22|22| | |
GULLS, TERNS & SKIMMERS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Bonaparte's Gull |11|11|11|11|11|11|11|11|11|11|11|11| ___ Ring-billed Gull |44|44|43|33|11| 1|23|33|33|33|44|44| ___ California Gull |33|33|33| | | | |33|32|22|23|33| ___ Herring Gull |22|22|22| | | | | | | 2|22|22| ___ Caspian Tern |22|22|22|23|32|23|33|33|44|21|11|11| ___ Common Tern | | | | | | | |33|44|2 | | | ___ Forster's Tern |22|22|22|23|33|33|34|44|44|32|11|11| ___ Black Tern | | | | 3|33|23|44|32| | | | |
PIGEONS & DOVES |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Rock Dove |11|11|11|11|11|11|11|11|11|11|11|11| ___ White-winged Dove*# |11|11|33|45|55|55|55|54|33|22|11|11| ___ Mourning Dove*# |55|55|55|55|55|55|55|55|55|55|55|55| ___ Inca Dove* |11|11|11|11|11|11|11|11|11|11|11|11| ___ Common Ground-Dove* |11|11|11|11|11|11|11|11|11|11|11|11|
CUCKOOS & ROADRUNNERS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Yellow-billed Cuckoo*# | | | | | 2|33|33|33|2 | | | | ___ Greater Roadrunner* |55|55|55|55|55|55|55|55|55|55|55|55|
BARN OWLS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Barn Owl* |33|33|33|33|33|33|33|33|33|33|33|33|
TYPICAL OWLS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Western Screech-Owl* |44|44|44|44|44|44|44|44|44|44|44|44| ___ Great Horned Owl* |44|44|44|44|44|44|44|44|44|44|44|44| ___ Elf Owl*# | | |11|11|11|11|11|11|11| | | | ___ Burrowing Owl*# |11|11|11|11|11|11|11|11|11|11|11|11| ___ Long-eared Owl# |22|22|22|22|11|11|11|11|11|11|12|22|
GOATSUCKERS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Lesser Nighthawk*# |11|11|33|45|55|55|55|55|43|33|22|22| ___ Common Poorwill*# | |11| 4|44|44|44|44|44|44|42|2 | |
SWIFTS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Vaux's Swift# | | | |33|44| | |33|32|2 | | | ___ White-throated Swift*# |44|44|44|44|44|44|44|44|44|44|44|44|
HUMMINGBIRDS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Black-chinned Hummingbird*# | |22|25|55|55|55|55|55|52|22| | | ___ Anna's Hummingbird*# |44|44|44|43|33|33|33|33|44|44|44|44| ___ Costa's Hummingbird*# |23|44|44|44|32|22|22|22|22|22|22|22|
KINGFISHERS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Belted Kingfisher# |44|44|44|33|22| | |23|34|44|44|44|
WOODPECKERS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Gila Woodpecker* |55|55|55|55|55|55|55|55|55|55|55|55| ___ Yellow-bellied Sapsucker# |22|22|22|22| | | | | | |22|22| ___ Red-naped Sapsucker# |33|33|22|2 | | | | | 2|23|33|33| ___ Red-breasted Sapsucker# |22|22| | | | | | | | 2|22|22| ___ Ladder-backed Woodpecker* |44|44|44|44|44|44|44|44|44|44|44|44| ___ Northern Flicker (Gilded)*# |22|22|22|22|22|22|22|22|22|22|22|22| ___ Northern Flicker (Red-shafted)# |55|55|53|3 | | | | | 2|23|55|55| ___ Northern Flicker (Yellow-shafted)# |22|22|2 | | | | | | | 2|22|22|
TYRANT FLYCATCHERS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Olive-sided Flycatcher# | | | | 3|33|32| | |33| | | | ___ Western Wood-Pewee# | | | |23|55|32| 2|23|44|32| | | ___ Willow Flycatcher*# | | | |11|22|2 |11| |33| | | | ___ Hammond's Flycatcher# |11|11|11|34|43| | | 2|22|11|11|11| ___ Gray Flycatcher# |22|22|23|33|32| | | |33|33|22|22| ___ Pacific-slope Flycatcher# |22|22|34|44|43|2 | 3|44|44|32|22|22| ___ Black Phoebe* |55|55|55|55|55|55|55|55|55|55|55|55| ___ Eastern Phoebe# |22|22|2 | | | | | | | |22|22| ___ Say's Phoebe*# |55|55|54|44|44|32|22|22|33|55|55|55| ___ Vermillion Flycatcher*# |33|33|33|34|44|44|44|44|43|33|33|33| ___ Ash-throated Flycatcher*# |33|33|45|55|55|55|55|55|54|44|33|33| ___ Brown-crested Flycatcher*# | | | 3|44|44|44|44|44|32| | | | ___ Western Kingbird*# | | |34|55|55|55|55|55|54|32|11| |
LARKS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Horned Lark*# |22|22|22|22|22|22|22|22|22|22|22|22|
SWALLOWS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Purple Martin# | | | |11|11| |11|11|11| | | | ___ Tree Swallow# |44|44|44|32|2 |11| 3|44|44|44|44|44| ___ Violet-green Swallow*# |22|33|32| |11|11|11|11| 3|33| | | ___ Northern Rough-winged Swallow*# |45|55|55|55|55|55|55|55|54|33|33|34| ___ Bank Swallow# | | | 2|23|32| 2|22|33|33|33|32| | ___ Cliff Swallow*# | |34|55|55|55|55|55|55|43|31| | | ___ Barn Swallow# | |22|23|45|54|22| |22|34|54|11|11|
JAYS & CROWS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ American Crow |22|22| | | | | | | | 2|22|22| ___ Common Raven* |55|55|55|55|55|55|55|55|55|55|55|55|
VERDINS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Verdin* |55|55|55|55|55|55|55|55|55|55|55|55|
BUSHTITS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Bushtit |22|22|2 | | | | | | | 2|22|22|
NUTHATCHES |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Red-breasted Nuthatch |11|11|11|11| | | | |11|11|11|11|
CREEPERS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Brown Creeper# |33|33|33|3 | | | | | | |33|33|
WRENS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Cactus Wren* |44|44|44|44|44|44|44|44|44|44|44|44| ___ Rock Wren*# |44|44|44|44|44|44|44|44|44|44|44|44| ___ Canyon Wren* |44|44|44|44|44|44|44|44|44|44|44|44| ___ Bewick's Wren* |44|44|43|33|33|33|33|33|34|44|44|44| ___ House Wren# |44|44|44|43|3 | | |23|44|44|44|44| ___ Winter Wren |22|22|22|22| | | | | | 2|22|22| ___ Marsh Wren*# |55|55|55|54|44|44|44|44|45|55|55|55|
KINGLETS & GNATCATCHERS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Golden-crowned Kinglet# |11|11|11|11| | | | | | |22|22| ___ Ruby-crowned Kinglet# |55|55|55|54|32| | | | 3|55|55|55| ___ Blue-gray Gnatcatcher# |44|44|44|3 | | | |33|44|44|44|44| ___ Black-tailed Gnatcatcher* |55|55|55|55|55|55|55|55|55|55|55|55|
THRUSHES & ALLIES |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Western Bluebird# |33|33|3 | | | | | | | | 3|33| ___ Mountain Bluebird# |22|22| | | | | | | | |22|22| ___ Hermit Thrush# |44|44|44|43|22| | | | 2|33|44|44| ___ American Robin# |33|33|33|22|22|22|22|22|22|22|33|33|
MOCKINGBIRDS, THRASHERS & ALLIES |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Northern Mockingbird# |33|33|33|33|22|22|22|22|23|33|33|33| ___ Sage Thrasher# |23|33|33|2 | | | | |22|22|22|22| ___ Bendire's Thrasher# |11|11|11|11|11|11|11|11|11|11|11|11| ___ Crissal Thrasher* |44|44|44|44|44|44|44|44|44|44|44|44|
PIPITS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ American Pipit# |55|55|55|54|32| | | |23|33|35|55|
WAXWINGS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Cedar Waxwing# |55|55|55|53|32|22| | |22|33|33|33|
SILKY-FLYCATCHERS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Phainopepla*# |55|55|55|55|54|32|22|22|22|33|55|55|
SHRIKES |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Loggerhead Shrike*# |55|55|54|44|44|44|44|55|55|55|55|55|
STARLINGS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ European Starling* |22|22|22|22|22|22|22|22|22|22|22|22|
VIREOS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Bell's Vireo*# | | |24|55|55|55|55|55|55|43|33| | ___ Solitary Vireo# |22|22|23|34|43| | | |33|33|32|22| ___ Warbling Vireo# | | |33|34|55|42| |24|54|32| | |
WOOD-WARBLERS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Orange-crowned Warbler# |44|44|44|44|44|3 | |33|44|44|44|44| ___ Nashville Warbler# | | | 2|43|32| | | 2|44|33| | | ___ Virginia's Warbler# | | | |22|22|2 | |22|22| | | | ___ Lucy's Warbler*# | | | 3|55|55|55|55|43|32| | | | ___ Yellow Warbler*# |22|22|22|24|44|11|11|34|44|32|22|22| ___ Yellow-rumped Warbler (Myrtle)# |22|22|22| | | | | | | 2|22|22| ___ Yellow-rumped Warbler (Audubon)# |55|55|55|54|3 | | | |34|55|55|55| ___ Black-throated Gray Warbler# |22|22|22|33|22| | |22|33|44|33|22| ___ Townsend's Warbler# | | | | 3|42| | |22|33|43| | | ___ Hermit Warbler# | | | | 3|32| | |23|33|32| | | ___ Black-and-white Warbler# |11|11|11|11|22| | | |22|22|22|22| ___ American Redstart# |22|11|11|11|22| | |22|22|22|22|22| ___ Northern Waterthrush# |11|11|11| | | | | |11|11|11|11| ___ MacGillivray's Warbler# | | |22|34|43| | |23|44|43|2 | | ___ Common Yellowthroat*# |44|44|45|55|55|55|55|55|55|44|44|44| ___ Wilson's Warbler# |11|11|23|45|55|3 | |35|55|32|22|22| ___ Yellow-breasted Chat*# | | | |34|55|55|55|55|54|2 | | |
TANAGERS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Summer Tanager*# | | | | | 4|44|44|44|44|22| | | ___ Western Tanager# | | | |24|43|11|11|33|44|32| | |
CARDINALS, GROSBEAKS & BUNTINGS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Northern Cardinal |11|11|11|11|11|11|11|11|11|11|11|11| ___ Black-headed Grosbeak# | | | 2|34|43|32|34|44|44|22| | | ___ Blue Grosbeak*# | | | | 4|55|55|55|54|43|22| | | ___ Lazuli Bunting# | | | |24|44|31| 3|44|44| | | | ___ Indigo Bunting# | | | | |11|11|11|11|11| | | |
SPARROWS, TOWHEE & ALLIES |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Green-tailed Towhee# |33|33|33|44|3 | | | |34|44|33|33| ___ Rufous-sided Towhee# |33|33|32|2 | | | | | 2|22|33|33| ___ Abert's Towhee* |55|55|55|55|55|55|55|55|55|55|55|55| ___ Chipping Sparrow# |44|44|44|43|3 | | 2|33|44|44|44|44| ___ Brewer's Sparrow# |55|55|55|43|22| | |34|45|55|55|55| ___ Vesper Sparrow# |33|33|33|33|22| | | |22|33|33|33| ___ Lark Sparrow# |22|22|22|22| | | | 2|22|22|22|22| ___ Black-throated Sparrow*# |33|34|44|44|44|44|44|44|44|33|33|33| ___ Sage Sparrow# |33|33|32| | | | | |33|33|33|33| ___ Lark Bunting# |11|11| | | | | | | | |11|11| ___ Savannah Sparrow# |44|44|44|43|22| | | 2|34|44|44|44| ___ Grasshopper Sparrow# |22|22|22|22|22| | | | | |22|22| ___ Fox Sparrow# |22|22|22|2 | | | | | 2|22|22|22| ___ Song Sparrow*# |55|55|55|55|55|55|55|55|55|55|55|55| ___ Lincoln's Sparrow# |55|55|54|33| | | | |33|55|55|55| ___ Swamp Sparrow# |22|22|22|22| | | | | | | 2|22| ___ White-throated Sparrow# |22|22|22|2 | | | | | | 2|22|22| ___ Golden-crowned Sparrow |22|22|22|22|2 | | | | | 2|22|22| ___ White-crowned Sparrow# |55|55|55|44|33|2 | | |34|44|44|44| ___ Dark-eyed Junco (Oregon)# |33|33|33| | | | | | |33|33|33| ___ Dark-eyed Junco (Slate-covered)# |22|22|22| | | | | | |22|22|22| ___ Dark-eyed Junco (Pink-sided)# |22|22|22| | | | | | | |22|22| ___ Dark-eyed Junco (Gray-headed)# |22|22|22|2 | | | | | | 2|22|22|
BLACKBIRDS, ORIOLES & ALLIES |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ Red-winged Blackbird*# |55|55|55|55|55|55|55|55|55|55|55|55| ___ Western Meadowlark*# |33|33|33|33|33|33|33|33|33|33|33|33| ___ Yellow-headed Blackbird*# |22|22|23|33|33|33|33|33|33|22|22|22| ___ Brewer's Blackbird# |33|33|33|33|22| | | |22|33|33|33| ___ Great-tailed Grackle* |55|55|55|55|55|55|55|55|55|55|55|55| ___ Brown-headed Cowbird*# |22|22|24|55|55|55|54|44|22|22|22|22| ___ Hooded Oriole# | | | 1|11|11|11|11|11|11| | | | ___ Bullock's Oriole*# | | | 4|55|55|55|54|43|33|22| | |
FINCHES, GOLDFINCHES & ALLIES |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ House Finch* |55|55|55|55|55|55|55|55|55|55|55|55| ___ Pine Siskin# |33|33|33|22| | | | |22|33|33|33| ___ Lesser Goldfinch*# |44|44|44|44|33|33|33|33|34|44|44|44| ___ Lawrence's Goldfinch# |33|33|33|33|22|22|22|22|22|33|33|33| ___ American Goldfinch# |33|33|33|32|2 | | | | | 3|33|33|
OLD WORLD SPARROWS |Ja|Fb|Mr|Ap|My|Jn|Jl|Ag|Sp|Oc|Nv|Dc| ___ House Sparrow |11|11|11|11|11|11|11|11|11|11|11|11|
ACCIDENTALS, IRREGULAR, OR POSSIBLY EXTIRPATED SPECIES Red-throated Loon Townsend's Solitaire# Blue-footed Booby Swainson's Thrush# Brown Booby Varied Thrush Cattle Egret Gray Catbird# Ross' Goose Brown Thrasher Barrow's Goldeneye Curve-billed Thrasher White-tailed Kite Le Conte's Thrasher Northern Goshawk# Yellow-throated Vireo# Harris' Hawk Hutton's Vireo Red-shouldered Hawk# Red-eyed Vireo# Sandhill Crane Blue-winged Warbler# Band-tailed Pigeon# Golden-winged Warbler# Flammulated Owl# Magnolia Warbler# Northern Saw-whet Owl Black-throated Blue Warbler Common Nighthawk# Black-throated Green Warbler Broad-billed Hummingbird# Bay-breasted Warbler# Broad-tailed Humminghird# Prothonotary Warbler# Lewis' Woodpecker# Worm-eating Warbler# Acorn Woodpecker Ovenbird# Williamson's Sapsucker# Louisiana Waterthrush# Dusky Flycatcher# Hooded Warbler# Tropical Kingbird# Painted Redstart# Cassin's Kingbird# Rose-breasted Grosbeak Thick-billed Kingbird# Bobolink# Purple Martin# Rusty Blackbird Steller's Jay Bronzed Cowbird# Pinyon Jay Scott's Oriole# Mountain Chickadee Red Crossbill Bridled Titmouse Evening Grosbeak White-breasted Nuthatch

For more information contact:
                         Refuge Manager
                         Bill Williams River NWR
                         60911 Highway 95
                         Parker, Arizona 85344
                         Telephone: 520/667-4144
This resource is based on the following source:
U.S. Fish and Wildlife Service.  No date.  Birds of Bill Williams River 
     National Wildlife Refuge.  U.S. Fish and Wildlife Service.  Unpaginated.
This resource should be cited as:
U.S. Fish and Wildlife Service.  No date.  Birds of Bill Williams River 
     National Wildlife Refuge.  U.S. Fish and Wildlife Service.  Unpaginated.
     Jamestown, ND: Northern Prairie Wildlife Research Center Online.
     http://www.npwrc.usgs.govbillwill.htm 
     (Version 22MAY98).

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