Monthly Bird Movement in Stanislaus County

Late February:

Arrivals: Violet-green Swallow, Cliff Swallow

Early March

Arrivals: Swainson’s Hawk (rW), Northern Rough-winged Swallow, Barn Swallow (rW)

Mid March

Arrivals: Caspian Tern (rW)

Departures: Cackling Goose, Short-eared owl

Late March

Arrivals: Western Sandpiper (uW), Pacific-slope Flycatcher (rW), Western Kingbird, Wilson's Warbler, Grasshopper Sparrow, Bullock's Oriole

Departures: Snow Goose, Ross’s Goose, Common Merganser, Rough-legged Hawk, Ferruginous Hawk, Bald Eagle, Varied Thrush, Golden-crowned Kinglet

Early April

Arrivals: Semipalmated Plover (rW), Whimbrel, Forster’s Tern (rW), Ash-throated Flycatcher, Warbling Vireo, Blue-Gray Gnatcatcher (uW), Western Tanager (rW), Black-headed Grosbeak, Hooded Oriole

Departures: Greater White-fronted Goose, Northern Pintail, Green-winged Teal, Ring-necked Duck, Lesser Scaup, Herring Gull, Mountain Bluebird,

Mid April

Arrivals: Lesser Yellowlegs, Wilson’s Phalarope, Red-necked Phalarope, Black Tern, Caspian Tern, Lesser Nighthawk (uS*), Common Poorwill, Vaux's Swift, Rufous Hummingbird, Olive-sided Flycatcher, Western Wood-Pewee, Cassin's Vireo, Swainson's Thrush, Yellow Warbler, Black-throated Gray Warbler, Chipping Sparrow (uW), Blue Grosbeak, Lazuli Bunting

Departures: Gadwall (uS*), Bufflehead, Sharp-shinned Hawk, Pacific Golden-Plover, Bonaparte's Gull, Red-breasted Sapsucker, Say's Phoebe, Brown Creeper, Hermit Thrush, Vesper Sparrow

Late April

Arrivals: Merlin, Black-chinned Hummingbird, Olive-sided Flycatcher, Willow Flycatcher, Yellow-breasted Chat

Departures: Eared Grebe, Green-winged Teal, Canvasback, Common Goldeneye, American Wigeon, Northern Shoveler, Ruddy Duck, American Coot (uS), Black-bellied Plover, Long-billed Curlew, Ruby-crowned Kinglet, Fox Sparrow, Lincoln's Sparrow, White-throated Sparrow, Purple Finch, Pine Siskin

Early May

Departures: Snowy Egret (uS*), Cattle Egret (uS*), Greater Yellowlegs, Lesser Yellowlegs, Whimbrel, Spotted Sandpiper, Least Sandpiper, Lewis’s Woodpecker, American Pipit, Yellow-rumped Warbler, Savannah Sparrow, White-crowned Sparrow, Dark-eyed Junco, Golden-crowned Sparrow

Mid May

Departures: American White Pelican (uS), Semipalmated Plover, Western Sandpiper, Dunlin, Long-billed Dowitcher, Wilson's Snipe (uS*), Wilson’s Phalarope, Red-necked Phalarope, Ring-billed Gull, California Gull, Black Tern, Caspian Tern, Lesser Nighthawk (uS*), Vaux’s Swift, Olive-sided Flycatcher, Western Wood-Pewee, Cassin’s Vireo, Blue-Gray Gnatcatcher, Swainson’s Thrush, Orange-crowned Warbler, Nashville Warbler, Yellow Warbler (uS*), Black-throated Gray Warbler, Townsend's Warbler, Hermit Warbler, MacGillvray’s Warbler, Wilson’s Warbler, Western Tanager.

Late May

Departures: Cedar Waxwing

Early July

Arrivals: Greater Yellowlegs

Mid July

Arrivals: Lesser Yellowlegs, Western Sandpiper, Least Sandpiper, Short-billed Dowitcher, Wilson’s Phalarope, California Gull

Late July

Arrivals: American White Pelican (uS), Spotted Sandpiper, Red-necked Phalarope, Caspian Tern, Rufous Hummingbird

Early August

Arrivals: Eared Grebe, Northern Shoveler, Long-billed Dowitcher, Ring-billed Gull, Western Tanager

Mid August

Arrivals: Snowy Egret (uS*), Green-winged Teal, Semipalmated Plover, Pacific Golden-Plover, Wilson's Phalarope, Red-necked Phalarope, Bonaparte's Gull, Warbling Vireo, Blue-Gray Gnatcatcher, Orange-crowned Warbler

Late August

Arrivals: American Wigeon, Wilson's Snipe, Lesser Nighthawk (uS*), Olive-sided Flycatcher, Cassin’s Vireo, Swainson’s Thrush, Townsend's Warbler

Early September

Arrivals: Canvasback, Black Tern, Vaux’s Swift, Cedar Waxwing, Grasshopper Sparrow, Purple Finch

Mid September

Arrivals: Cattle Egret (uS*), Ring-necked Duck, Sandhill Crane, Dunlin, Red-breasted Sapsucker, Say's Phoebe, Ruby-crowned Kinglet, American Pipit, Vesper Sparrow, Fox Sparrow, Lincoln's Sparrow, White-throated Sparrow, White-crowned Sparrow, Golden-crowned Sparrow

Departures: Western Kingbird, Ash-throated Flycatcher, Black-headed Grosbeak, Blue Grosbeak, Bullock's Oriole

Late September

Arrivals: Bufflehead, Common Goldeneye, Herring Gull, Hermit Thrush, Varied Thrush

Departures: Lesser Nighthawk, Black-chinned Hummingbird, Olive-sided Flycatcher, Violet-Green Swallow, Cliff Swallow, Swainson’s Thrush, Lazuli Bunting, Hooded Oriole

Early October

Departures: Wilson's Phalarope, Common Poorwill, Vaux’s Swift, Olive-sided Flycatcher, Western Wood-Pewee, Cassin’s Vireo, Warbling Vireo, Western Tanager (rW)

Mid October

Arrivals: Short-eared Owl, Herring Gull, Golden-crowned Kinglet, Pine Siskin (highly irruptive)

Departures: Western Sandpiper (uW), Forster’s Tern, Caspian Tern, Black Tern, Vaux's Swift, Pacific-slope Flycatcher, Northern Rough-winged Swallow, Swainson's Thrush, Yellow Warbler, Townsend’s Warbler (uW), Black-throated Gray Warbler (uW), Chipping Sparrow (uW)

Late October

Departures: Costa’s Hummingbird, Wilson's Warbler, Western Tanager (rW)

Arrivals: Rough-legged Hawk, Bald Eagle, Ferruginous Hawk, Merlin, Brown Creeper, Mountain Bluebird

Early November

Departures: Barn Swallow (rW)