Cambodian Tailorbird

Fairly distinctive swift found in northwestern South America. Medium-sized with slightly notched tail. Blackish overall with a white throat and white band across the lower belly. Namesake white tips on tail can be difficult to see. Compare with Andean Swift, which has longer, more sickle-shaped wings, a deeper forked tail, and more extensive white on the breast. White-tipped is typically found in small flocks at fairly high elevations, from around 1,300 to 2,700 m (higher than Lesser Swallow-tailed Swift), and often does not associate with other swift species. Occurs over a variety of habitats including forest and drier, more open areas.

Small glossy crow, common in northeast Mexico. Occurs in towns, villages, rubbish dumps, farmland, and semiopen areas with hedges and taller trees. Social and usually in flocks, at times of hundreds. Most likely to be confused with male Great-tailed Grackle, which has pale eyes and longer and keel-shaped tail (shed in late-summer molt). Chihuahuan Raven much larger, with much heavier bill and different voice. Calls of Tamaulipas Crow are low, froglike croaks.

Small, long-tailed antwren of the middle to upper levels of woodlands and dry forests. Males are gray with a contrasting black cap and eyebrow. The tail is black and white-tipped and the wings are black with white bars. In females note the cinnamon forehead, gray back and buff belly. The song is loud and usually given as a duet.