Matthew Studebaker / Common Nighthawk (Chordeiles minor), Montana

Matthew Studebaker / Red-necked Grebe (Podiceps grisegena) calling, Alaska

Matthew Studebaker / Pileated Woodpecker (Dryocopus pileatus) male, Ohio

Matthew Studebaker / Red-tailed Hawk (Buteo jamaicensis) catching rodent prey in snow, Ohio

Matthew Studebaker / American Golden-Plover (Pluvialis dominica), Alaska

Matthew Studebaker/ BIA / King Eider (Somateria spectabilis) male taking flight, Alaska

Matthew Studebaker/ BIA / American Cliff Swallow (Petrochelidon pyrrhonota) collecting mud for nest, Wyoming

Matthew Studebaker/ BIA / Long-tailed Duck (Clangula hyemalis) male flapping, Alaska

Matthew Studebaker / Pomarine Jaeger (Stercorarius pomarinus), Alaska

Matthew Studebaker / Lincoln's Sparrow (Melospiza lincolnii) calling, Ohio

Matthew Studebaker / Long-billed Dowitcher (Limnodromus scolopaceus), Alaska

Matthew Studebaker / Red-throated Loon (Gavia stellata) female on nest, Alaska