Uluguru Violet-backed Sunbird

This striking Celeus is widespread across the Amazonian lowlands of northern South America, with a disjunct population in southeast Brazil. Overall rufous with a shaggy crest like most other members of the genus. Distinctive and unlikely to be confused. Some variation across the range: most have extensive black markings on upperparts and belly, but largely unmarked in the northeastern part of range. All birds have solid black breast. Sexes are similar, but males have a red mustache. Occurs in mature forest and edges, often detected by its series of loud, strident whistles.

Long-winged nightbird with intricate brown and gray patterning. Very similar to Common Nighthawk, best distinguished by voice. Gives a rapid series of hard, buzzy notes: "drik-rik-rik-rik." A Caribbean species; in the U.S., found only on the Florida Keys. Prefers open areas with mix of grass, bare ground, and shrubs. Nocturnal but can be seen hunting around dawn and dusk, searching for insects in flight.

Australian crows and ravens are challenging to identify; concentrate on call, throat-hackles, behavior, and location. Calls typically end with a very long, drawn-out wail. The very long throat hackles lend it a bulbous-bearded appearance. Inhabits many habitats in southwestern Western Australia and much of eastern Australia. Essentially the default crow/raven in Sydney and Perth.