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Dusky Warbler: Small, dark warbler with gray-brown upperparts, gray-streaked underparts, distinct white eyebrow, and faint eye-ring. The tail is slightly round-tipped. Brown legs and feet. Forages on ground, in trees. Constantly flicks wings. Weak fluttering direct flight with shallow wing beats.
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Dunlin: Medium-sized sandpiper with black-streaked, red-brown upperparts, conspicuous black belly patch, and streaked breast. The black bill is long and slightly decurved. Legs and feet are black. Wades in shallows and uses bill to probe and pick up food. Swift direct flight with rapid wing beats.
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Dusky Flycatcher: Small flycatcher with olive-gray upperparts and white or yellow tinged underparts. The upper breast has a pale olive wash. Eye has faint eye-ring. Bill is black except for orange base of lower mandible. The legs and feet are black. Weak fluttering flight with shallow 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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Dark-eyed Junco: Medium sparrow with considerable geographic color variation, although all exhibit a pink bill, dark eyes, white belly, dark-centered tail with white outer feathers. Short flight with white outer tail feathers flashing, alternates several rapid wing beats with wings pulled to sides.
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