Acorn Woodpecker male--6388
Acorn Woodpecker female--6265
Aleutian Tern
Allen's Hummingbird male
American Avocet
American Avocet flock--4526
American Coot dorsal wing
American Coot ventral wing
American Kestrel
American Kestrel kiting
American Oystercatcher, dorsal wing--6560
American Pipit--2302
American Pipit soaring
American Robin male ventral wing--4016
American Robin female ventral wing--4036
American White upstroke--8617
American White Pelican downstroke--8670
American Wigeon
American Wigeon pair over marsh
Anhinga
Anna's Hummingbird
Arctic Tern
Arctic Warbler
Ash-throated Flycatcher ventral view--7891
Ash-throated Flycatcher dorsal view--7879
Bald Eagle
Bald Eagle dorsal flight
Barn Owl male
Barn Owl female--6746
Belcher's Gull adult--6699
Belted Kingfisher male
Belted Kingfisher female
Berylline Hummingbird
Black-billed Magpie--2035
Black-billed Magpie #2--2048
Black-capped Vireo male--0031
Black-hooded Parakeet
Black Phoebe with American Rubyspot--6012
Black Phoebe
Black Skimmer
Black Tern in flight dorsal
Black Tern in flight ventral
Black Vulture
Black-bellied Whistling-Duck
Black-billed Magpie
Black-crowned Night-Heron, dorsal wing--1347
Black-crowned Night-Heron, ventral wing--7103
Black-headed Grosbeak male upstroke--6369
Black-headed Grosbeak male downstroke--6368
Black-legged Kittiwake
Black-necked Stilt--6817
Black-necked Stilt--7177
Black-tailed Gnatcatcher--1167
Black-tailed Gnatcatcher--9803
Black-throated Sparrow downstroke--7695
"Blue" Goose
Blue Jay--1025
Blue Jay--0736
Blue-gray Gnatcatcher--2992
Blue-headed Vireo--0375
Blue-winged Teal
Blue-winged Warbler male--7386
Brewer's Blackbird female with food items--3805
Broad-billed Hummingbird
Broad-billed Hummingbird male in flight--9403
Broad-winged Hawk
Brown Booby
Brown Pelican
Brown Pelican incoming
Brown-crested Flycatcher--4081
Bufflehead male--0859
Bufflehead male--0993
Bullock's Oriole
Burrowing Owl
Bushtit female
Cactus Wren
Cactus Wren and Saguaro
California Condor
California Condor wall shadow
California Gull adult non-breeding dorsal
California Gull 1st winter
Calliope Hummingbird
Canada Goose
Canada Geese banking--8517
Canvasback flock in flight--6336
Caspian Tern
Cassin's Kingbird harassing Zone-tailed Hawk
Cassin's Sparrow
Cassin's Vireo in flight--0877
Cattle Egret
Cedar Waxwing in flight showing red wing appendages--3878
Cedar Waxwing pair in flight--3880
Chestnut-sided Warbler male in flight--9161
Cinnamon Teal male in flight--2014
Cinnamon Teal female in flight--1998
Clay-colored Thrush
Cliff Swallow dorsdal view--6619
Cliff Swallow ventral view
Common Black Hawk ventral wing
Common Black Hawk dorsal wing
Common Eider
Common Goldeneye male--1597
Common Goldeneye female in flight--1243
Common Merganser males
Common Merganser female
Common Murres--5781
Common Ravens
Cooper's Hawk adult flight close-up--3910
Cooper's Hawk immature in flight ventral--4462
Costa's Hummingbird head shot--9854
Costa's Hummingbird
Crested Caracara adult
Crested Caracara juvenile
Curve-billed Thrasher
Curve-billed Thrasher ventral
Double-crested Cormorant, breeding plumage--8439
Double-crested Cormorant, breeding plumage--8442
Eastern Meadowlark
Elegant Tern
Eurasian Collared-Dove in flight--4356
Eurasian Collared-Dove--2764
European Starling
European Starling with Fan Palm berry
Ferruginous Hawk
Ferruginous Hawk dark morph adult--2976
Five-striped Sparrow in flight--0927
Fork-tailed Storm-Petrel
Forster's Tern
Gambel's Quail
Gambel's Quail female in flight--5356
Gila Woodpecker male ventral wing--7669
Gila Woodpecker male dorsal wing--7658
Gilded Flicker male
Gilded Flicker female
Glaucous Gull adult non-breeding in fog
Glaucous Gull first summer
Glaucous-winged Gull 2nd winter
Glaucous-winged Gull 1st winter
Glossy Ibis
Golden Eagle
Gray Flycatcher in flight--0790
Gray Hawk
Gray Hawk adult dorsal view
Great Blue Heron upstroke--8057
Great Blue Heron downstroke--8518
Great Egret
Great Frigatebird
Great Horned Owl
Great Kiskadee
Great-tailed Grackle male in display flight--4361
Great-tailed Grackle female
Greater Prairie Chicken
Greater Roadrunner
Greater Roadrunner flight silhouette--9360
Greater Scaup
Greater Yellowlegs vertical--2433
Greater Yellowlegs upstroke--0925
Green Heron, dorsal view--1385
Green Heron, downstroke--1434
Green Jay
Green-winged Teal male in flight showing green speculum--8632
Green-winged Teal female in flight showing green speculum--8600--2
Harlequin Duck
Harris's Hawk
Harris's Hawk adult male underwing
Heerman's Gull adult non-breeding dorsal
Heerman's Gull 1st winter
Hermit Thrush with Pyracantha berry--1397
Hermit Thrush
Herring Gull adult winter--3756
Herring Gull 3rd winter
Hooded Merganser
Hooded Oriole male--3977
Hooded Oriole male--3487
Hook-billed Kite
House Finch male breeding plumage--8164
House Finch
Iceland Gull dark juvenile in flight
Inca Dove with shadow--9886
Inca Dove, ventral wing--9885
Inca Tern flight over ocean--6736
Inca Tern in flight eye level--6735
Ivory Gull in flight--1000
Kelp Gull
Killdeer calling downstroke--6280
Killdeer coasting--8315
King Eiders
Laughing Gull
Laysan Albatross
Least Bittern adult
Least Bittern juvenile
Least Sandpiper stack--7320-#2
Least Sandpiper in flight with water reflections--7256
Least Tern adult in flight dorsal
Least Tern adult in flight with fish
Lesser Black-backed Gull 1st winter in flight ventral
Lesser Black-backed Gull 1st winter in flight dorsal
Lesser Nighthawk
Lesser Nighthawk male dorsal view--2808
Lesser Scaup pair
Limpkin
Little Blue Heron
Long-billed Dowitcher, basic plumage
Long-billed Dowitcher, alternate plumage--0101
Long-tailed Duck
Long-eared Owl--1896
Long-eared Owl ventral wing--0372
Long-tailed Duck male oars on the water
Long-tailed Jaeger
Long-tailed Jaeger juvenile light morph in flight
Lucy's Warbler male--9922
Magnificent Frigatebird
Mallards
Mallard male
Marbled Godwit
Mew Gull
Mexican Ducks
Mississippi Kite
Mountain Bluebird male in flight through Ponderosa Pine--5140
Mountain Bluebird male banking in flight--6007
Mourning Dove
Nene dorsal wing
Nene ventral wing
Neotropic Cormorant
Neotropic Cormorant sunrise
Northern Cardinal male--0430
Northern Cardinal female
Northern Fulmar
Northern Harrier male
Northern Harrier juvenile
Northern Hawk Owl
Northern Mockingbird, upstroke--2211
Northern Mockingbird, downstroke--2210
Northern Parula female
Northern Pintail male--1572
Northern Pintail male--1058
Northern Pygmy-Owl in flight--4677
Northern Pygmy-Owl with prey
Northern Rough-winged Swallow aquatic capture--4482--3
Northern Rough-winged Swallows squabbling--9912
Northern Shoveler male
Northern Shoveler male in flight showing green speculum--6389
Orange-crowned Warbler--8044
Orange-crowned Warbler--5791
Osprey with trout--8001
Osprey with trout #2
Painted Redstart in flight--5670
Palm Warbler in flight--7282
Parasitic Jaeger dark morph adult harassing Black-legged Kittiwake with fish
Parasitic Jaeger chasing dark morph Pomarine Jaeger
Pectoral Sandpiper in flight--2951
Peregrine Falcon female--4848
Peregrine Falcons
Phainopepla male
Phainopepla female
Pied-bill Grebe
Pigeon Guillemots
Pinyon Jay in flight--4895
Pomarine Jaeger
Prairie Falcon
Prairie Falcon juvenile--6932
Purple Martin male dorsal wing--1355
Purple Martin female--7299
Pygmy Nuthatch in flight--6439
Reddish Egret immature--9930
Redhead male--8410
Red-faced Warbler--5574
Red-footed Booby ventral view
Red-footed Booby dorsal view
Red-legged Kittiwake
Red-shafted Flicker male, downstroke--7517
Red-shafted Flicker female--2251
Red-shouldered Hawk dorsal wing
Red-shouldered Hawk ventral wing--9699
Red-tailed Hawk adult rufous morph
Red-tailed Hawk adult dark morph
Red-throated Loon
Red-winged Blackbird
Ring-billed Gull
Ring-billed Gull juvenile
Ring-necked Duck male, nictitating membrane partially drawn--3913
Ring-necked Ducks
Rock Pigeon
Rock Pigeon with nesting material
Roseate Spoonbill
Roseate Spoonbill juvenile
Rose-throated Becard male--6601
Rosy-faced Lovebird pair
Rosy-faced Lovebird juvenile-2702
Rough-legged Hawk adult light morph
Rough-legged Hawk immature light morph--7966
Royal Tern
Royal Tern adult breeding in flight with fish
Ruby-crowned Kinglet, ventral view, October--1711
Ruddy Turnstone winter adult
Rufous Hummingbird
Sabine's Gull
Sandhill Crane wing silhouette--3504
Sandhill Crane dropping into corn
Sandwich Tern in flight with fish
Sandwich Tern
Say's Phoebe
Say's Phoebe
Scarlet Macaw
Scissor-tailed Flycatcher
Scott's Oriole first spring male--6110
Sharp-shinned Hawk adult female
Sharp-shinned Hawk juvenile male--7896
Short-eared Owl in flight
Short-eared Owl wing clap--4391
Short-tailed Hawk
Snail Kite female carrying Apple Snail
Snail Kite male carrying Apple Snail
Snow Goose
Snow Goose--umbrella wings--0001
Snowy Egret
Snowy Owl
Song Sparrow
South Polar Skua
Spectacled Eider
Spotted Sandpiper downstroke--7596
Spotted Sandpiper--2324
Steller's Eider
Swainson's Hawk
Swallow-tailed Kite
Townsend's Solitaire dorsal wing--0172
Townsend's Solitaire ventral wing--0224
Tricolored Heron adult
Tricolored Heron juvenile
Trumpeter Swan--1088
Trumpeter Swans--1050
Turkey Vulture
Vaux's Swift
Verdin--7771
Vermilion Flycatcher male flight display--6711
Vermilion Flycatcher female--1445
Violet-crowned x Broad-billed Hummingbird hybrid
Violet-green Swallow male leaving nest cavity--1571
Violet-green Swallow female-4901
Western Bluebird male--1978
Western Bluebird female--4848
Western Kingbird diagnostic outer tail feathers--0354
Western Kingbird--2149
Western Meadowlark in flight--07322
White Ibis
White-faced Ibis in flight--7296
White-tailed Hawk
White-tailed Kite
White-tailed Tropicbird
White-tailed Tropicbird diving
White-throated Swift--4468
White-winged Dove--8463
White-winged Dove--5456
Whooping Crane
Williamson's Sapsucker male--7141
Williamson's Sapsucker male catching gnats on the wing--6603
Wood Stork
Yellow-headed Blackbird juvenile male--9730
Yellow-headed Blackbird female--2838
Yellow Warbler
Yellow-footed Gull adult non-breeding in flight
Yellow-footed Gull 1st winter
Yellow-rumped Warbler (Audubon's) male in flight--0662
Yellow-rumped Warbler (Audubon's) hover plucking Fan Palm berries
Zone-tailed Hawk male--0098
Zone-tailed Hawk female