Brown-bellied Swallow

Sleek medium-sized thrush with a beautiful voice. Listen for its fluty, ethereal phrases drifting over montane forests. Sexes alike: entirely gray with black face, black wings, and orangey bill and legs. Juveniles confusingly browner and spotted, but note similar shape, small bill, and dark face. Unobtrusive and not very active; most often seen while feeding at a fruiting tree.

Rather large, dark, stocky gull-like seabird with big white wing patches (seen in flight). In summer often seen flying over Patagonian steppe or associating with Kelp Gulls at beaches, dumps, river mouths, and lakes near the coast. Also found well offshore, where it chases other birds to steal their food. Usually seen as singles or small groups. Plumage variable, but always with some orange tones—sometimes bright and extensive, sometimes limited to underwing and base of tail. The only skua likely to be seen in Chile and southern Argentina.

Streaky canopy foliage-gleaner with a slightly hooked bill tip. Light buffy brown overall with extensive streaking from the head down to the back and breast, with reddish wings and tail. Forages in the midstory and canopy with mixed species flocks, keeping its body horizontal as it clambers along branches. Most common in upland forest, where it can be the most common foliage-gleaner in canopy mixed species flocks, but can also occasionally be found in mature forest in seasonally flooded areas.