Spot-necked Babbler

Chunky, olive-backed bird. Males have a black head, multi-colored bare facial skin, and yellow underparts. Females have pale underparts with scaly markings. Madagascar endemic that is rare and local in moist patches of western deciduous forest. Found mainly in the upperstory, where it often visits flowering and fruiting trees. Sits motionless for long periods, and flies weakly. Usually alone or in pairs. Call is a quick, rising series of very high-pitched notes. Female is similar to female Velvet Asity, but is separated by range. 

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.

The quintessential big black crow, without obvious field marks. Juvenile Rook has longer, more pointed bill with more extensive feathering on base. Smaller than Common Raven, which has longer, wedge-shaped tail, heavier bill, shaggy throat, and deeper voice. Ravens soar and glide readily, whereas crows typically flap continuously. Common in varied open and semi-open habitats from towns and farmland to open woodland and moorland. Found in pairs or small groups; large flocks only at roosts. Typically gives raucous caws.