29-34" (73.5-86.5 cm). W. 6'4"-6'11" (193-211 cm). Long slim wings, short, rounded tail. Back, upperwings, tail blackish; rest of body white; underwing white, narrow, dark trailing edge, broader dark leading edge; dark slender bill, hooked, thin yellow stripe on culmen.… read more
37" (94 cm); wingspan 84-90" (214-229 cm). Adults have white body, including back; broad black band at tip of tail. Head and neck washed with yellow-buff; bill pale pink. Juveniles entirely dark brown with pink bill and feet. … read more
Laysan Albatross
Phoebastria immutabilis (Diomedea immutabilis)
32" (81 cm). W. 6'6" (2 m). Long wings, short tail. Back, wings, tail blackish; head, neck, underparts white; underwing white with black edging, irregular black patches; bill thick, hooked, either yellow with gray tip or solid gray. Conspicuous dark patch around eye.… read more
28-36" (71-91 cm). W. 6'6"-7" (1.9-2.1 m). Large, very long-winged seabird. Mainly blackish brown, white on face, dark bill. Amount of white increases as birds age. Conspicuous white primary shafts show in flight.… read more
20-22" (51-56 cm). Dull gray-brown above, whitish below; bill pale (usually yellow, sometimes marked with dusky color). Dull gray crown blends evenly with white sides of face.… read more
18" (46 cm). Seldom seen from shore. 2 common color phases: pale gray on back, wings, white elsewhere (common in East); and uniformly dark gray. Intermediates, nearly all-white birds, also occur. Bill yellow. Flight: several fast wingbeats followed by stiff-winged glide.… read more
14-18" (36-46 cm). A long-winged, long-tailed petrel, dark above with black cap; white collar and rump; white underparts. Viewed from below, wings have broad dark margins.… read more
14" (36 cm). A small petrel with a distinctively short, heavy bill. Gray above, with dark bars on upper surfaces of wings forming a flattened M shape; darker gray on breast and belly. The undersides of the wings show broad, sharply defined black bands.
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16 1/2 -18" (42-46 cm). Blackish, wedge-shaped tail. Gray above, with distinct blackish cap; pure white underparts, wing linings. In flight, dark bar on upper surface of wings and lower back forms an M-shaped pattern.… read more
19 1/2" (50 cm). W. 3'3" (1 m). Largest of the dark-bodied shearwaters in the North Pacific. Sooty black above, below, and on wing linings; heavy pinkish or yellowish bill with dark tip; pale pink feet. Wingbeats slower than those of other shearwaters.… read more
20" (51 cm). A gull-sized shearwater, dark gray-brown above and whitish below; undersides of wings are white with dark borders. Bill pinkish with dark tip; feet pale pink.… read more
18-20" (46-51 cm). A large shearwater, dull brown above, with pale scaling; white below, dusky belly; cap dark, contrasting with white face; may show white at base of tail; bill black.… read more
16-18" (41-46 cm). Large shearwater. In the Atlantic, only one that appears uniformly dark sooty brown above, below, with silvery whitish wing linings. Bill, feet dark. Slender, narrow-winged, skims on stiff wings over waves, alternately gliding, flapping.… read more
11-12" (28-30 cm). A small shearwater, brownish-black above and white below except for dark undertail feathers. Half the size of Greater Shearwater.… read more
12 1/2 -15" (32-38 cm). Blackish-brown above, contrasting white underparts, wing linings. Bill black, feet pink. Flight rapid, with much flapping and little gliding. The form that visits California waters has dark undertail coverts.… read more
12 1/2-15" (32-38 cm). Uniform blackish above, white below. A distinct blackish cap-darker than the back, and usually a distinct white patch at base of tail.… read more
13-14" (33-36 cm). A dark shearwater, with dark bill and feet. Distinguished from Sooty Shearwater by slightly smaller size, dull gray (rather than whitish) wing linings, shorter tail and bill, and slightly faster wingbeat.… read more
7" (18 cm). Darts, skims over waves like a swallow. Black with white rump, square-tipped or rounded tail. Longer legs than other western storm-petrels, with yellow webs between toes.… read more
7.5 - 9" (19-23 cm). Blackish-brown overall with pale wing bars and a clear, curved white band across rump; white on rump more extensive than on Leach's but less than on Wilson's. Tail slightly forked; legs do not extend beyond tail in flight.… read more
8-9" (20-23 cm). A gray storm-petrel, somewhat darker above than below, with forked tail but without white rump. All other Pacific storm-petrels are blackish. Flies with deep, regular wingbeats.… read more
7 1/2" (19 cm). An all-black storm-petrel with shallowly forked tail and somewhat rounded wings. Ashy color of head and neck and light mottling on undersides of wings may be visible at close range. Flies with very shallow wingbeats.… read more
8-9" (20-23 cm). A black storm-petrel with a shallowly forked tail and a white rump with a dark center; south of Central California, birds lack the white rump. Flies like a nighthawk, with much bounding and veering. Seldom follows boats.… read more
9" (23 cm). Dark with long pointed wings, forked tail. Flight smooth and languid, with deeper and more graceful wingbeats, than that of other storm-petrels. Other all-dark storm-petrels are smaller, with different flight styles.… read more
6" (15 cm). The smallest storm-petrel on the West Coast. An all-dark bird with short wings; tail short and wedge-shaped rather than forked. Often appears tailless at a distance. Flight swift and low, with very rapid wingbeats.… read more
8" (20.5 cm). Grayish-backed with gray rump; underparts white; white face with distinct dark line running through eye; white underwings with broad, dark trailing edge; long legs; yellow-webbed feet. Swings erratically from side to side during gliding flight.… read more
40" (1 m), including tail feathers. W. 3'8" (1.1 m). Adult is a large white seabird with very long central tail feathers, fine black bars on back and upper surface of wings, and red bill. Young birds similar, but lack long tail streamers.… read more
32" (81 cm). W. 3'1" (94 cm). Adult is a white, pigeon-sized seabird with very long central tail feathers, bold black wing markings, and yellow bill. Young birds lack the long tail feathers and are white, with fine black barring above.… read more
30-37" (76-94 cm), including tail. W. 41" (104 cm). Adults have deep red bills, mostly white body plumage, dark eye patch, and thin red tail streamers (often difficult to see in the field). Juvenile lacks tail streamers, has black bill and barred upperparts.… read more
35-40" (89-102 cm). Adult white with black wing tips; head tinged with orange-buff. Long pointed tail, wings. Immature dark gray, variously speckled and patterned with white. Alternately flaps, glides in flight; plunge dives when feeding.… read more
32" (81 cm). White with black tail, black tips and trailing edges to the wings, stout pinkish or orange bill. In breeding season, birds have patch of bare, bluish skin at base of bill.… read more
30" (76 cm). Adult has dark brown head, upperparts, and breast, with sharply contrasting white belly and white underwing coverts. Immature is gray-brown above and below; darker on head, wings, and tail.… read more
32-34" (81-86 cm). Head and neck pale, streaked brown. Wings, back, tail dark brown; white patches on nape, rump; underparts white. Legs, feet bright blue. Back and rump of immatures slightly mottled.… read more
26-30" (66-77 cm). Straight, pale blue bills, red feet, pink at base of bill. White-phase adults white, dark flight feathers; white-tailed form, brown, white rump, tail; white-headed brown form resembles white-tailed, with head, neck white (Pacific only).… read more
38-40" (97-102 cm). W. 7'6" (2.3 m). Black with very long, narrow, pointed wings, deeply forked tail, and long hooked bill. Male, brilliant red throat pouch in breeding season. Female has white breast. Young have white heads and underparts.… read more
12" (30 cm). Extensive pure white cap. Rest of plumage dark brownish black, feet brownish black; bill long, thin, straight, and black; tail wedge-shaped.… read more
15" (38 cm). Dark sooty brown with pale grayish-white crown; wedge-shaped tail; slender black bill.… read more
8-9 1/2" (20-24 cm). W. 25-27" (63-67 cm). Breeding plumage, red bill, white tail, rump, whitish upperwing coverts, black underwing linings; outermost flight feathers on upperwing, black. In molt, body plumage patchy black-and-white, rump, tail whitish; bill black.… read more
9-10" (23-25 cm). A medium-sized tern with solid black head and underparts; gray wings and moderately forked gray tail. In fall and winter, head and underparts white, with dusky smudging around eyes and back of neck.… read more
23-26" (58-66 cm). Adult white with light gray back and wings; wing tip black with white spots; bill yellow with red spot on lower mandible; feet pink or flesh colored. First-year birds brownish. Acquires adult plumage in 4 years.… read more
15-17" (38-43 cm). A slender, medium-sized gull with a black hood in breeding plumage. In summer, the adult's back, wings are dark gray; trailing edge of wing is white, wing tip is black, without white spots. In winter, lacks a hood.… read more
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