Recurvirostra americana

A large slender shorebird with a long, slender, recurved bill (longer and straighter in males than in females), long spindly legs, and a long neck; wings and back are boldly patterned with black and white; belly and flanks are white; head and neck and rusty in breeding plumage, gray in basic plumage; juveniles have a cinnamon wash on the head and neck; average length 46 cm (NGS 1983).

Falco columbarius

A small falcon with pointed wings, a strongly barred tail, a hooked bill, and heavy streaking below; upperparts are gray-blue in males, dark brown in females; overall, plumage is much darker in the Pacific Northwest than in central Canada and the Midwest; average length 31 cm, wingspan 64 cm (NGS 1983).

Falco peregrinus anatum

A falcon with long pointed wings, a dark crown and nape, and a dark wedge extending below the eye; forehead is pale in immature, which are mainly brownish above rather than black or gray as in adults (NGS 1983).

Haliaeetus leucocephalus

Adults have a white head, white tail, and a large bright yellow bill; elsewhere the plumage is dark. Immatures are dark with variable amounts of light splotching on the body, underwing coverts, flight feathers, and tail base; averages 79-94 cm long, 178-229 cm wingspan (NGS 1983).

Accipiter gentilis

A fairly large hawk with a long tail, rounded wing tips, and a conspicuous pale eyebrow; adult has dark crown, blue-gray back, white underparts with dense gray barring, and conspicuous fluffy white undertail coverts; immature is brown above, buffy below, with dense blurry streaking, undertail coverts are dark-streaked, and tail has wavy dark bands bordered with white and a thin white tip; total length is 53-66 cm, with females averaging lager than males (NGS 1983).

Falco peregrinus

A falcon with long pointed wings, a dark crown and nape, and a dark wedge extending below the eye; forehead is pale in immature, which are mainly brownish above rather than black or gray as in adults; arctic birds are relatively pale, and peregrines of the northwest coast of North America are very dark, compared to the intermediate coloration of the subspecies (ANATUM) that once ranged across North America; averages 41-51 cm long, 91-112 cm in wingspan (NGS 1983).

Falco sparverius

Pointed wings, reddish back and tail, two black stripes on each side of white sides of head; male has blue-gray wings; averages 27 cm long, 58 cm in wingspan (NGS 1983).

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