swan, Cygnus columbianus (O) Wood duck, Aix sponsa (U) Blue-winged teal, Spatula discors (U) Northern shoveler, Spatula clypeata (O) Gadwall, Mareca strepera (O) American wigeon, Mareca americana (O) Mallard, Anas platyrhynchos (U) American black duck, Anas rubripes Northern pintail, Anas acuta (O) Green-winged teal, Anas crecca (U) Canvasback, Aythya valisineria (O) Redhead, Aythya americana (O) Ring-necked duck, Aythya collaris (U) Greater scaup, Aythya marila Lesser scaup, Aythya affinis Harlequin duck, Histrionicus histrionicus (Unk) Surf scoter, Melanitta perspicillata (R) White-winged scoter, Melanitta deglandi (U) Black scoter, Melanitta americana (O) Long-tailed duck, Clangula hyemalis Bufflehead, Bucephala albeola Common goldeneye, Bucephala clangula Hooded merganser, Lophodytes cucullatus (U) Common merganser, Mergus merganser Red-breasted merganser, Mergus serrator Ruddy duck, Oxyura jamaicensis (O) Grebes Order: PodicipediformesFamily: Podicipedidae Grebes are small to medium-large freshwater diving birds. They have lobed toes and are excellent swimmers and divers. However, they have their feet placed far back on the body, making them quite ungainly on land. Pied-billed grebe, Podilymbus podiceps (U) Horned grebe, Podiceps auritus (U) Red-necked grebe, Podiceps grisegena (U) Western grebe, Aechmorphorus occidentalis (Unc) Pigeons and doves Order: ColumbiformesFamily: Columbidae Pigeons and doves are stout-bodied birds with short necks and short slender bills with a fleshy cere. Rock pigeon, Columba livia (I) (O) Mourning dove, Zenaida macroura (U) Cuckoos Order: CuculiformesFamily: Cuculidae The family Cuculidae includes cuckoos, roadrunners, and anis. These birds are of variable size with slender bodies, long tails, and strong legs. Yellow-billed cuckoo, Coccyzus americanus (O) Black-billed cuckoo, Coccyzus erythropthalmus (R) Nightjars and allies Order: CaprimulgiformesFamily: Caprimulgidae Nightjars are medium-sized nocturnal birds that usually nest on the ground. They have long wings, short legs, and very short bills. Most have small feet, of little use for walking, and long pointed wings. Their soft plumage is cryptically colored to resemble bark or leaves. Common nighthawk, Chordeiles minor (U) Eastern whip-poor-will, Antrostomus vociferus (O) Swifts Order: ApodiformesFamily: Apodidae The swifts are small birds which spend the majority of their lives flying. These birds have very short legs and never settle voluntarily on the ground, perching instead only on vertical surfaces. Many swifts have very long, swept-back wings which resemble a crescent or boomerang. Chimney swift, Chaetura pelagica (U) Hummingbirds Order: ApodiformesFamily: Trochilidae Hummingbirds are small birds capable of hovering in mid-air due to the rapid flapping of their wings. They are the only birds that can fly backwards. Ruby-throated hummingbird, Archilochus colubris (U) Rails, gallinules, and coots