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Wedge-tailed Shearwater Dark Morph: Large shearwater, dark brown overall with black-tipped, dark gray bill. Tail is long and pointed in flight and extends past the pink legs and feet, fans to wedge-shaped when banking turns or landing. The dark morph form is most often seen off the Pacific Coast.
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Stejneger's Petrel: Small petrel with gray-brown upperparts, dark gray rump, white underparts. Black head, nape, bill. White face. Gray-brown upperwing, black greater coverts and outer primaries forming an M pattern across lower back. Legs and feet are blue-gray. Gray-brown tail mottled with white.
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Ashy Storm-Petrel: Small seabird, gray-black overall, dark bill, forked tail. Gray wash on underwing coverts are visible at close range. Legs and feet are dark gray. Unlike most storm-petrels, it doesn't travel far from colonies after breeding. Flight is fluttering and direct on shallow wing beats.
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Audubon's Shearwater: Small, stocky seabird with dark brown upperparts and white underparts. Underwing coverts are white. Tail is dark brown with short, gray undertail coverts. Bill is dark and legs and feet are pink. Fish and squid make up most of its diet. Alternates rapid wing beats with glides.
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Bermuda Petrel: Medium petrel, gray-brown upperparts shading to black on rump; white underparts except for dusky sides of upper breast. Base of tail has white band. White face, forehead. Black-brown cap goes to eyes. In flight shows black-gray upperwings, white underwings with black margins, tips.
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Murphy's Petrel: Large petrel, overall gray or gray-brown body and pale throat. Underwings have pale bars. Legs and feet are pale, toes have black distal webbing. Bill is black. Feeds on squid and crustaceans. Swift flight, alternates several rapid wing beats with long glides. Does not follow ships.
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Mottled Petrel: Medium-sized petrel, mostly gray with mottled white markings. Face is gray and white and, throat, upper breast, and undertail are white. Wings have distinct black bars on white undersides. Feeds on small squid and fish. Alternates high soaring arcs and gliding with rapid wing beats.
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Flesh-footed Shearwater: Large, bulky shearwater with dark brown body, darker head and tail. Bill is large and pink with a dark tip. Wings are dark with brown-edged coverts that become paler with wear. Legs and feet are pale pink. Slow flight, alternates stiff-winged flapping and gliding near water.
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Streaked Shearwater: Large shearwater with scaled, dark gray-brown upperparts, white underparts. White head has variable light to heavy pale brown streaks. Uppertail coverts can be white, forming a pale "horseshoe." The forehead is white. Bill is pale. Legs and feet are pink. Eats small fish and squid. Flies with loose, angled wings. Light, graceful flapping and gliding.
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Short-tailed Shearwater: Medium shearwater with dark brown body and occasional traces of white in the center of upperwings. Bill is short and dark. Feet are dark gray and trail slightly behind tail in flight. Tail is rounded. Alternates strong flaps with long glides, often soars for long periods.
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Buller’s Shearwater: Medium shearwater, gray upperparts, white underparts. Head has white face, black cap, black bill. Tail is black. Legs and feet are pink. Dark gray M-pattern is visible across upperwings and back in flight. Alternates deep steady wing beats with long glides. Soars in high winds.
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Great-winged Petrel: Large petrel with brown-black body except for pale gray forehead, face, chin, and throat. Bill is black and stout. The legs and feet are black. Feed on fish, squid and crustaceans. In New Zealand it is also known by its Maori name oi and as a muttonbird. AKA Grey-faced Petrel.
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Manx Shearwater: Small shearwater with brown-black upperparts and white underparts, underwings and undertail coverts. Black head is darker than back. The bill is dark. Wings are long, slim, and straight. Tail is short and pointed. Feeds on fish and squid. Alternates long glides and rapid wing beats.
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Bulwer's Petrel: Medium petrel, dark brown overall, pale diagonal bars across secondary coverts. Long tail is usually held in a point; wedge shape visible when fanned. Bill is black and hooked. Legs and feet are black. Feeds on squid, plankton and small fish. Picks food from surface while in flight.
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Black-capped Petrel: Large petrel with white underparts, dark brown to black back and upper wings, black cap, and white collar (this field mark is missing in some birds). Tail is long, dark, and wedge-shaped; underwings show broad dark margins. Hooked bill is dark, legs are pink. High arcing flight.
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White-faced Storm-Petrel: The only Atlantic storm-petrel with the combination of dark gray upperparts and white underparts with a dark cap and eyeline. Long black legs trail behind squared tail in flight. Webbing between toes is yellow. Alternates rapid, shallow wing beats with stiff-winged glides.
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Great Cormorant: Largest North American comorant. Black with bright yellow throat pouch bordered with white feathers. Expert swimmer, dives for fish, crustaceans. When wet holds wings in spread eagle position to dry. Strong direct flight with steady wing beats. Flies in V or straight line formation.
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Black-browed Albatross: White head, neck, underparts, and black back, tail. Yellow bill with red tip, pale pink-gray legs and feet. Easily identified by black tail, stiff wing beats and long narrow pointed wings. Soars effortlessly for long periods of time, may circle and glide for long distances.
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Yellow-nosed Albatross: Pelagic albatross with pale gray head, neck, rump, black back, upperwings, white underparts and black margin around white underwings. Red-tipped black bill has yellow patch on upper mandible. Gray legs, feet. Glides and soars for hours with minor adjustments to wing position.
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Hawaiian Petrel: Medium-sized tube-nosed seabird with white front and cheeks, black upperparts, and white underparts. Squared, medium-length tail, long, pointed wings, and erratic, arching and diving flight.
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White-chinned Petrel: Medium to large seabird with overall black or dark brown plumage. It has a chalky white bill, black legs and feet, and a medium length tail. It often shows a silvery patch on the base of the primaries of its long wings. Flight is powerful with slow wing beats and long glides.
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Parkinson's Petrel: Medium to large seabird with overall black or dark brown plumage. It has a yellow-white bill with a black tip, black legs and feet, and a medium length tail. Has powerful flight with slow flapping followed by long glides on long wings.
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Red-faced Cormorant: Dark brown to black with variable green and violet iridecsence. Bright red face patch, dull bill. Black legs, feet. Breeding adults develop white patches on flanks and white neck feathers or "plumes." Strong powerful direct flight. Flies in straight line formation.
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Herald Petrel: Medium petrel, three color morphs: light, intermediate, dark. Dark morph is dark gray overall, silver-gray to white base on underwing flight feathers. Light morph has white breast, belly and dark gray upperparts. Intermediate forms exist between light and dark morphs. Gray legs, feet.
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Fea's Petrel: Medium petrel, gray-brown upperparts, white belly. White breast with partial gray-brown breast band. Wings bend back at the wrist, have a dark M pattern across upperwings and lower back. Underwings are mostly dark. White face, dark mask around eyes. Gray tail, pale uppertail coverts.
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Cory's Shearwater: Large gray-brown shearwater, white underparts, pale yellow bill. Feeds at night on crustaceans and large sqiud it takes from the surface. Best identified by its relatively slow, languid flight compared to other shearwaters. Wings held downward. Soars on fixed wings if wind is up.
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Band-rumped Storm-Petrel: Black-brown storm-petrel with gray-brown wing bars and conspicuous white band across the rump and, large, slightly notched tail. Black bill, legs and feet. Bouyant, zigzag flight alternating several rapid wing beats with glide on horizontal or slightly downward-bowed wings.
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Neotropic Cormorant: Small, long-tailed cormorant. Black upper and lowerparts may show blue gloss. Long hooked yellow-gray bill with yellow "v" shaped gular pouch edged in white. Legs and feet are black. Feeds on fish, crustaceans and amphibians. Flies low over water with strong rapid wing beats.
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Little Shearwater: Tiny shearwater, dark brown upperparts and white underparts; dark cap extends only to eye. Bill is short and black. Swims and dives for food, picks food off surface of water. Feeds on fish and squid. Flight is low, fast and straight, alternates rapid wing beats and banking glides.
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Laysan Albatross: Large seabird with dark brown back and white head, neck, and rump. Eye patch is dark. Bill is thick and yellow with gray, hooked tip. Wings are dark brown above and white below with irregular brown-black borders. Tail is dark brown-black with white coverts. Legs and feet are pink.
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Black-footed Albatross: Large seabird with long wings, gray-black body, and white ring around face at base of bill. Uppertail coverts are pale gray. Most have dark undertail coverts, some have white undertail and belly. The most frequently sighted albatross off the Pacific Coast of North America.
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Common Merganser: Large, sleek diving duck with black upperparts and white underparts. Head and upper neck are green-black with head crest usually not visible. Long, thin bill is bright red. Wings are black with extensive white patches. Feeds on fish, mollusks, crustaceans, insects and plants.
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Long-tailed Jaeger: Small jaeger with gray upperparts, white breast, gray belly. Black cap covers eyes, crosses chin and ends at yellow nape. Upperwings are dark-edged. Tail is gray with black edges and long, black streamers. Legs are blue-gray and toes are webbed. Hovers before dipping for prey.
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Short-tailed Albatross: Largest and only white-bodied albatross in the North Pacific. The head and nape have a golden-yellow cast. White wings have black edges and tips. Tail is white with black fringe. Legs and feet are pink-gray. AKA Steller's Albatross. Almost became extinct in late 19th century.
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Pomarine Jaeger Dark Morph: Large jaeger, dark brown except for white patches near underwing tips and sides of undertail. Light morph has white neck, pale yellow collar, white lower breast, mottled breast band, sides. Thick bill, pale at base. Tail has two long central feathers twisted vertically.
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Parasitic Jaeger Dark Morph: Medium jaeger with brown body, darker cap, and pale underwing patches near tips. Pale form has white underparts with brown breast band; intermediates between dark and light morphs occur. Diamond-shaped tail has elongated, pointed central feathers. Black bill, legs, feet.
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Pelagic Cormorant: Small cormorant with glossy black body and bold white patches on flanks. Red face and throat pouch. Head and neck are held straight in flight, with head appearing no wider than neck. Feeds on fish, crustaceans and other invertebrates. Graceful direct flight with rapid wing beats.
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Double-crested Cormorant: Medium cormorant with iridescent black body and orange throat pouch. Western birds have white feather tufts over each eye in early summer. Pale bill is long and hooked. Black legs and feet. Feeds on fish, amphibians and crustaceans. Strong direct flight, soars on thermals.
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Brandt's Cormorant: Medium crestless cormorant with dull black body. Face, back have slender white plumes. Bright blue throat pouch bordered with yellow. Dives for fish, crabs and shrimp. Holds wings out to dry. Strong direct flight with rapid, powerful wing beats, flies in straight line formation.
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Red-breasted Merganser: Medium-sized diving duck with black upperparts, gray sides, rust-brown breast, and white belly. Head, double crests, and neck are green and the neck ring is white. Bill is long, thin, and bright orange. Feet and legs are orange. Females are brown-gray with gray-washed, red-brown head, double crest, and white breast and belly. Feeds mostly on fish, which it finds by diving.
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Magnificent Frigatebird: Large black seabird, orange throat patch inflates into a huge bright red-orange balloon when in courtship display. Long bill is gray, hooked. Wings are long and narrow. Tail is forked; legs and feet are dark gray. Eats fish, crustaceans, jellyfish. High soaring flight.
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Hooded Merganser: Small merganser with black upperparts and white underparts with two black bars on side of breast; red-brown flanks. Crest shows large white patch when raised, white stripe extending backwards from the eye when lowered. Dark wings have white shoulder patches visible in flight.
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Glaucous Gull: Large, white gull with pale gray back. Eyes are yellow. Bill is yellow with red spot on lower mandible. Wings are white-edged and white tipped. Legs and feet are pink. An active predator of seabird nesting colonies. Slow, steady wing beats. Soars on thermals and updrafts.
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Shy Albatross: Large seabird with white body and gray back. The bill is gray with a yellow tip and base. Underwing is white with diagnostic narrow black margin. Tail is gray. Legs and feet are pink. Soaring flight on stiff, slightly drooped wings. Often interuppted with several slow deep wing beats.
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Wedge-rumped Storm-Petrel: Small storm-petrel, black-brown overall with large white patch on rump and central tail. Bill, legs, and feet are black. Feeds far out to sea. Flight is swift and direct, with deep wing beats and much banking and twisting. Often flies high above the surface of the water.
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Least Storm-Petrel: Small, very rare storm-petrel with dark black-brown body and short, wedge-shape tail. The wings have black wing tips and pale brown diagonal bars visible in flight. It is the smallest Pacific storm-petrel. Flight is swift and direct on deep wing beats. Often flies low over water.
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Fork-tailed Storm-Petrel: Medium storm-petrel, blue-gray upperparts, pale gray underparts. Forehead is dark gray, eye patch is gray. Primaries are darker gray than other flight feathers. Forked tail, feathers are narrowly white-tipped. Alternates rapid, shallow wing beats and stiff-winged glides.
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Wilson's Storm-Petrel: Small storm-petrel, mostly brown-black body, pale brown wing bands, large, conspicuous white rump. Wings are short and rounded. Feet extend past tail in flight. Smallest and most commonly seen storm-petrel off the Atlantic Coast. Direct flight with steady, shallow wing beats.
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Dark-rumped Petrel: Medium petrel with dark slate-gray upperparts and white underparts. Sides of neck and underwing margins are dark. Bill is relatively short, black, and hooked. Legs and feet are pink-brown. Tail is white and wedge-shaped. Feeds on suqid, crustaceans, and fish. AKA Galapagos Petrel.
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Cook's Petrel: Small petrel, slate-gray back and upperwings marked by a distinctive black M pattern. Underparts, underwings are white. Face is white with small, dark mask. Wings are long and slender. Tail is gray, black-tipped central feathers and white edges. Black bill, blue-gray legs and feet.
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Black Storm-Petrel: Small seabird, brown-black overall with long, dark wings showing pale bar on upper side, and forked tail. The hooked bill is dark and has a tube on top. Legs and feet are black. Flight is mothlike with deep, steady wing beats. Comes closer to shore than most other storm-petrels.
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Northern Fulmar Light Morph: Large gull-like bird with gray upperparts and white underparts, head, neck, and tail. Dark morph has uniformly dark gray body and paler primaries. Bill is short, thick, and yellow with a tube on top. Flight alternates stiff wing beats with periods of gliding and banking.
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Black-vented Shearwater: Medium shearwater, brown-black upperparts, white underparts, brown mottling on sides of breast and flanks. Tail is dark. Eats fish, crustaceans, and squid. Quick low flight with short stiff wingbeats followed by glide. Soars in high winds.
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South Polar Skua Dark: Small, gull-like skua, occurs in two color phases. Dark phase adult has dark brown body, large white patch at base of primaries visible in flight. Dark bill, thick and heavy; short, broad tail. Light phase adult has pale gray-brown head and underparts. Strong direct flight.
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Great Shearwater: Large shearwater, scaled, gray-brown upperparts, white underparts, brown markings on belly. Dark cap contrasts with white face. Tail is dark above with conspicuous white rump band and gray below. Dark, hooked bill. Pink legs, feet. Flies on deep wing beats followed by long glide.
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Sooty Shearwater: Large shearwater with dark gray-brown body, darkest on tail and primaries. Underwing coverts are pale. Bill is long and dark. Legs and feet are black. Eats fish, squid and crustaceans. Long, narrow wings are slightly swept-back. Alternates strong direct flapping with long glides.
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Pink-footed Shearwater: Large shearwater, gray-brown upperparts, white underparts, mottled brown flanks and undertail coverts. Head is gray-brown and pink bill is tipped with black. Flight feathers are dark-bordered and underwing coverts are mottled gray. Alternates slow wing beats with low glides.
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Leach's Storm-Petrel: Medium storm-petrel with dark brown body and white rump and undertail feathers. Wings are dark with pale gray-brown bar on upperwings. Long tail is dark and forked. Bill, legs, and feet are black. Its flight is bounding and erratic, with frequent changes of direction and speed.
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