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Rocky Mountain National Park

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Nature Guide to selected species of:

Rocky Mountain National Park 

        

   


276 Birds

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© Harold Lindstrom
Common Loon
Gavia immer
28-36" (71-91 cm). Heavy-bodied, thick, pointed, usually black or dark gray bill held horizontally. Breeding plumage, head, neck black with white bands on neck; back black with white spots. In winter, crown, hindneck, upperparts dark grayish; throat, underparts white.


© Chuck Gordon
Western Grebe
Aechmophorus occidentalis
22-29" (56-74 cm). A large slender grebe with a long neck. Blackish above with black of cap extending below eyes; white below and on front of neck. Bill long, slender, greenish yellow. Long white wing stripe shows in flight.


© Chuck Gordon
Horned Grebe
Podiceps auritus
12-15" (30-38 cm). Small, slender-necked, with short, sharply pointed bill. In breeding plumage, body dark, with rufous neck and flanks; head blackish, with conspicuous buff ear tufts. In winter, upperparts dark; chin and foreneck white.


© Tom J. Ulrich
Red-necked Grebe
Podiceps grisegena
18-20" (46-51 cm). In breeding plumage, has rufous neck, black cap, whitish cheeks, and long, pointed yellowish bill. In winter, mainly gray, with paler cheeks, pale (not necessarily yellow) bill. In flight, white wing patches show.


© Chuck Gordon
Eared Grebe
Podiceps nigricollis
12-14" (30-36 cm). In breeding plumage, black head, back; golden ear tufts; black crest. In winter plumage, dark gray above, white below; neck dusky. Bill appears slightly upturned, sides of face smudged with gray, whitish patch behind ear.


© Arthur Morris
Pied-billed Grebe
Podilymbus podiceps
12-15" (30-38 cm). Pigeon-sized. A stocky, uniformly brownish water bird, with stout whitish bill that has black ring around it during breeding season.


© Chuck Gordon
American White Pelican
Pelecanus erythrorhynchos
55-70" (1.4-1.8 m). W. 8' (2.4 m). A huge white bird with a long flat bill and black wing tips. In breeding season, has short yellowish crest on back of head and horny plate on upper mandible. Young birds duskier than adults.


© John Gerlach
Double-crested Cormorant
Phalacrocorax auritus
30-35 (76-89 cm). Orange throat pouch and long neck. Long hooked bill tilted upward when swimming. Adults have short tuft of feathers over each eye during breeding season. In flight, the neck shows a slight crook.


© Brian E. Small
Great Blue Heron
Ardea herodias
39-52" (99-132 cm). W. 5'10" (1.8 m). Large, mainly grayish heron with a pale or yellowish bill. Flies with neck folded, not extended. In southern Florida an all-white form, "Great White Heron," has greenish-yellow rather than black legs.


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