Arden Park, California

Yellow-rumped Warbler (Setophaga coronata)

Orange-crowned Warbler (Oreothlypis celata)

Red-tailed Hawk (Buteo jamaicensis)

Colusa NWR, California

Falcated Duck (Anas falcata)

Green-winged Teal (American) (Anas crecca carolinensis)

Northern Pintail (Anas acuta)

Black-necked Stilt (Himantopus mexicanus)

Yolo Bypass Wildlife Area, California

Marsh Wren (Cistothorus palustris)

Red-shouldered Hawk (Buteo lineatus)

Serene Lakes, California

Mountain Chickadee (Poecile gambeli)

Steller's Jay (Cyanocitta stelleri)

Nimbus Fish Hatchery, California

Common Goldeneye (left) and Barrow's Goldeneye (right) (Bucephala clangula and Bucephala islandica)

Not the best photo but it clearly illustrates the field marks/differences of these often confused species. Note the shape of the face spot (elongated in the Barrow's), the amount of black on the back (Barrow's has more black), and the sheen color of the head (Barrow's is commonly purple instead of green for the Common)

Scott Road, Sacramento County, California

Lark Sparrow (Chondestes grammacus)

Yolo Bypass Wildlife Area, California

Savannah Sparrow (Passerculus sandwichensis)

Gadwall (Anas strepera)

American Coot (Fulica americana)

Wilson's Snipe (Gallinago delicata)