Black-winged Bishop

A bright flycatcher found in marshes in the Andes from Colombia to Argentina. Yellow below and olive above, sometimes showing a hint of a dark mask and dull yellowish edges on the wing feathers. Distinctive in habitat, although could be confused with a female Masked Yellowthroat, which has a pinkish bill and legs. Forages singly or in pairs; can be difficult to see in dense marsh grasses. Mostly occurs from 1,000 to 3,500 m, but some appear to move into lowlands in the winter in southern part of range. Gives single nasal calls as well as a whirring noise produced by the wings.

Medium-sized, typical nightjar with strong scaly markings on the back. Both sexes have a broad pale patch on the outer tail that is white in males and buff in females. Found in wet grassland and open savanna, including palm savanna. Song is a distinctive series of loud “chow” notes. Most similar to Square-tailed Nightjar, but has larger pale patches in the outer tail and a blackish cheek. Male Swamp Nightjar lacks a white trailing edge to the wing in flight. Also similar to Montane Nightjar, but paler, lacks rufous collar, and has little overlap in either habitat or range.

A drab, long-tailed brownish greenbul. The tail is rufous and the throat paler buff, and there are pale crescents above and below the eyes. Found in gallery forest, secondary forest, plantations, and lush woodland. Very similar to Cabanis’s Greenbul, but has a darker bill and legs, and is browner, darker, and duller overall. Similar to Terrestrial Brownbul, but the throat patch is much duller, less bright white, and the pale eye crescents are more distinct. The vocalizations are a variety of chatty, nasal low-pitched notes.