Gray Thornbill

Rarely found north of cold subantarctic waters; ranges south to pack-ice in summer. Adult has a gray head, thick black underwing margins like much commoner Black-browed Albatross. Immatures look similar to Black-browed overall, but told by black bill that soon develops yellow along top, and often with variable gray hood. Yellow bill edges narrower than the more lightly built Buller’s Albatross, which occurs to the north but is often mistaken for Gray-headed.

Fairly common endemic woodpecker in desert interior habitats of southwest Mexico, especially in areas with tall columnar cacti, including towns and villages. Often in pairs or small groups. Rather drab and grayish overall with a whitish forehead patch and a densely barred black-and-white back. Male has red crown patch and female has plain gray head. No similar species in its limited range.

A pale-headed raptor of inland marshes and lakes. Tends to be uncommon and thinly distributed throughout its range. Adult is dark brown above with a paler belly and dirty-gray head. When in flight from below, a broad white band on the dark tail is the most eye-catching feature. Juveniles have an all-dark tail, but have two bright white panels on the undersides of the wingtips; this patterning can be similar to that of some kites, but the fish-eagle is much larger, with a longer-winged and comparatively shorter-tailed profile.