Question

what birds have Sheen or Iridescence heads

Answer 1

Surf Scoter: This medium-sized diving duck is entirely black except for white patches on the forehead and nape. It has an orange, black and white bill, white eyes and orange legs and feet. The female is less distinctly marked with smudgy face patches and dark bill. It dives for food, primarily mollusks and crustaceans. Rapid direct flight with strong wing beats. Flies in straight line formation.
Northern Shoveler: This is a medium-sized dabbling duck with a large spoon-shaped bill. Males have a dark green head, dark bill, orange legs, yellow eyes, white breast and chestnut patch on the flanks; females are mottled light brown with orange-brown bill and legs and dark eyes. They feed mostly on aquatic plants and seeds. They have a strong direct flight with powerful rapid wing beats.
Acorn Woodpecker: Medium-sized, clown-faced woodpecker. The male has a red crown, white forehead and glossy black face and body. The breast is white with black streaking; belly and rump are white. Yellow-tipped throat feathers may be present. Wings are black with white patches. Eyes are white. Female is similar except for a black patch between the white forehead and red crown. The juvenile has a dark eye.
Ruddy Duck: This small, bright red-brown duck has a black cap extending below the eyes onto the nape, heavy blue bill and black tail. Some males have an all black head lacking white cheek patches. Females have a gray-brown neck and body, dull buff-brown head and neck sides, with a stripe across pale-gray cheek patch. Feeds on aquatic invertebrates and vegetation. Direct flight on rapid wing beats.
Turkey Vulture: Medium vulture, mostly black with red, featherless head and upper neck. Wings are held in a shallow V in flight. One of the few birds of prey that is able to use its sense of smell to find food. They are attracted to the smell of mercaptan, a gas produced by the beginnings of decay.
Red-winged Blackbird: Small blackbird with jet-black body and bright red shoulder patches edged with yellow on bottom. Runs or hops while foraging on the ground. Eats seeds, grains, berries, fruits, insects, caterpillars, spiders, snails, grubs and mollusks. Strong direct flight on rapid wing beats.
European Starling: Small, chunky, iridescent purple and green blackbird with long, pointed yellow bill, pink legs, and short tail. The feathers on back and undertail show buff edges. Feeds in open areas, normally on the ground. Strong, direct and swift flight on rapidly beating wings.
Band-tailed Pigeon: Large dove, small, purple-gray head and broad neck with distinctive, thin white band on nape. Back and wings are purple-gray, underparts grade from purple-gray neck and breast to white belly. Tail is pale gray, dark band at base. Bill, legs,feet are yellow. Swift direct flight.
Rock Pigeon: This is a large, highly variably colored dove. The wild form has a gray body, dark blue-gray head, neck, breast, and white rump. The wings are gray with two black bars. It has a gray rounded tail with a dark terminal band. Forages on the ground; feeds on grass, seeds, grains, clover and berries. Swift direct flight. Sexes are similar.
Mourning Dove: This medium-sized dove has gray-brown upperparts and pink-brown underparts. The eyes are dark with a small black spot beneath. It has a dark bill, gray-brown wings with black spots and dark primaries. The tail is long and pointed, with black-edged white tips on outer feathers. Mostly feeds on seeds. Swift direct flight. Sexes are similar, but the male is slightly larger.
Anna's Hummingbird: Medium hummingbird; male has bronze-green upperparts, dull gray underparts. Hood and throat are iridescent red, may appear black or dark purple in low light; broken white eye-ring is usually visible. Tail is dark green with black outer tail feathers. Feeds on nectar, insects, spiders, and sap.
Allen's Hummingbird: Small, compact hummingbird; male has straight black bill, glittering green crown and back, white breast, and rufous sides, belly, rump, and tail. The throat (gorget) is iridescent copper-red. Female similar but lacks bright gorget. Feeds on nectar, insects, spiders, and sap. Swift direct flight, hovers when feeding.
Common Goldeneye: Medium diving duck, white-striped black upperparts, white underparts. Head is iridescent green-black with white circular patch between yellow eyes and dark gray bill. Wings are dark with large white patches conspicuous in flight. Legs and feet are yellow. Swift, direct flight.
Red-breasted Merganser: This medium-sized diving duck has black upperparts, gray sides, rust-brown breast, white belly, green head, double crests and neck, and white neck ring. The long thin bill, legs and feet are bright orange. Females are brown-gray with gray-washed, red-brown head, double crest and white breast and belly. Feeds mostly on small fish. Swift direct flight with rapid wing beats.

Answer 2

Green Heron: This small heron has gray-green upperparts, chestnut brown head, neck, and upper breast, and a paler brown belly. It has a green-black cap with a small crest and a white throat. The neck has a white central stripe. The bill is two-toned with a dark upper mandible and yellow lower. During the breeding season bill is black. It is an opportunistic feeder with fish as the primary food source. Direct flight. Sexes are similar.
American Coot: Medium-sized, chicken-like swimming bird, dark gray to black overall, short, white bill and undertail coverts. Toes are lobed, not webbed. Upper edge of frontal shield is red, but usually only visible at close range. Swift direct flight with rapid wing beats, feet protrude past tail.
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.
Common Loon: Large loon, white-spotted, black upperparts and white underparts. Head, neck are green-black with white-streaked neckbands. Bill is black and thick. Eyes are red-brown. Dives for small fish and crustaceans. Direct flight on strong deep wing beats, head, neck and feet extend beyond body.
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.
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.
White-faced Ibis: This medium-sized wading bird is iridescent bronze-brown overall and has a thin band of white feathers around its bare red face, a long, down curved bill, and red eyes, legs and feet. It feeds on invertebrates, frogs and fish. It alternates several shallow rapid wing beats and short glides, and flies in a straight line formation. Sexes are similar.
Black-billed Magpie: Large, noisy jay, mostly black, with very long tail and dark, stout bill. Wings and tail are iridescent blue and green-black. White belly and sides. Eats insects, larvae, carrion. Direct flight on shallow, steady wing beats. Often glides between perches or from perch to ground.
Yellow-billed Magpie: Large jay with black hood, back and breast, featherless, pale yellow spot behind eye, and white belly. Bill is yellow. Upperwings are iridescent blue-green with large white shoulder patches. Tail is iridescent green-black, very long, and wedge-shaped. Legs and feet are black.
Mallard: This medium-sized duck has a gray body, chestnut-brown breast, green head, white neck ring, yellow bill, wing speculum is white-bordered metallic purple-blue, white edged dark tail, two curled black feathers, and orange legs and feet. Feeds on insects and crustaceans. Females are mottled brown with orange-brown bills and no curled tail feathers. Swift direct flight with strong wing beats.
Northern Pintail: This large duck has gray and black upperparts, white neck and underparts, gray sides, long black pointed tail, brown head, throat and nape. White stripe divides front and back of neck, green speculum is bordered by buff. Feeds on seeds and aquatic insects. Females are mottled brown all over with slim, tan head, long neck and a shorter tail. Direct flight with rapid wing beats.
Lesser Scaup: Medium-sized diving duck has finely barred gray back and gray-washed white underparts. Head, neck and breast are black with purple gloss. It has yellow eyes, blue-gray bill, black tail and black wings with white patches. Females are chocolate brown with lighter sides, red-brown head and white patch at base of dark gray bill. Feeds on crustaceans, mollusks, small fish, seeds and vegetative plants. Swift direct flight with rapid wing beats.
American Wigeon: This is a medium-sized duck with a brown body, white crown, a large green ear patch extending to the back of the head, buff washed breast and sides and a white belly. It has a swift direct flight with strong wing beats. Shoulder patches are visible in flight. It has a black-tipped pale blue bill. It feeds on aquatic plants, insects and mollusks.
Ring-necked Duck: This medium-sized diving duck has black upperparts, a weakly tufted, purple-black head, black neck, upper breast and tail, cinnamon collar, white lower breast and belly, pale gray sides, and a blue-gray bill with a white ring near the black tip. Female is drab brown with white eye ring. Feeds on submerged plants and aquatic invertebrates. Direct flight with rapid wing beats.