Rufous Casiornis

Medium-sized open country flycatcher of Chaco woodland and flooded grasslands in N Argentina, W Paraguay, and SE Bolivia. Male from other Knipolegus by, in male, all dark wingsand grayish (as opposed to deep black) plumage. Female told from other female Knipolegus by dull, indistinct streaks on underparts, brown cap, rufous rump, and dull reddish iris. Prefers exposed perches in open thorn forest, roadsides, agricultural lands, and towns.

Spectacular, large, and very long-tailed jay of tropical lowland forest, plantations, and semiopen areas with hedges and tall trees; ranges from humid to fairly dry areas. Range not known to overlap with smaller White-throated Magpie-Jay. Usually in small groups and can be surprisingly inconspicuous if feeding quietly. At other times, unavoidably noisy and impossible to overlook. No similar species in range: note crest, black face and throat, and very long, white-edged tail that flows out behind in flight.

Chunky bird with broad, triangular wings and short, decurved bill. Male dark gray above, pale below, with a black face and throat and very pale underwings. Female with fainter mask and slight rusty wash to breast. Often forages very high up in enormous flocks, sometimes mixed in with White-browed Woodswallows.