Screaming Cowbird

Fairly small gull, common and widespread throughout most of North America. Breeding adults are white-headed with a bold black ring around the bill; nonbreeding adults have smudgy brown markings on the head. Note pale eye and yellow legs. Immatures are mottled brownish overall; note pink bill with black tip. Found along lakes, rivers, ponds, and beaches. More common inland than most other gull species, and quite fond of parking lots and urban areas. Often in flocks. Most similar to Short-billed Gull, but larger and larger-billed. Immatures of the two species are especially difficult to differentiate, but Ring-billed is usually more coarsely mottled.

Large, brown-and-white falcon of dry, open areas in western North America. Pale brown above and white below, with dark streaks and prominent mustache. Note the dark armpits to separate from Peregrine Falcon. Nests on cliffs, but ranges out over nearby grasslands and deserts when hunting. Feeds mainly on small rodents and birds.

A brown, tree-climbing bird with a strongly curved bill. Appears small-headed; plumage is mostly rufous-brown with buffy streaking on head and neck. Found in tall rainforest, where it is uncommon and locally distributed; often occurs in areas with extensive bamboo thickets. Generally shy and rather difficult to observe. Forages at middle and upper levels, using extraordinary bill to probe into deep bark crevices, bromeliads, and broken bamboo stems. Regularly follows mixed-species flocks. Song is variable, usually an accelerating series of strident whistles. Curved bill should immediately distinguish this species from most other woodcreepers in range. In western and central Amazonia, may overlap with Red-billed Scythebill, from which it may not be safely separable unless singing.