White-winged Black-Tyrant

Small owl, active during the day and night. Very similar in plumage to other pygmy-owls, but limited range at high elevation (mostly above 1000m) is a good starting point. Overall brown to rufous with white stripes on belly; look for small white spots on crown and bars on flanks. Sexes alike. Found singly or in pairs in montane forests. Listen for whistled song of doubled notes given on an even pitch.

Medium-sized warbler with green upperparts, yellow underparts, a bright yellow eyering, and a gray crown bound by two black stripes. Extremely similar to several closely related species; luckily, range prevents much confusion throughout these species’ natural ranges. Primary confusion species is Whistler’s Warbler, from which it may be distinguished visually, albeit with significant difficulty. In Green-crowned, note weak break at rear of eye-ring (while the eyering of Whistler’s is thickest at the back end), longer and more slender bill, shorter tail, more solidly black crown stripes, and slightly brighter green upperparts. As with many physically similar species, using a combination of these field marks is preferable in identification. Active, frequently flitting about in the lower levels of forest, sometimes associating with foraging flocks. Breeds in both evergreen and deciduous broadleaved forest in hilly and montane areas; moves to lowland areas in the winter. Averages lower than Whistler’s Warbler in altitudinal breeding preference, and overlap is fairly minimal. Song is a strung-together series of ringing “witchy-witchy-witchy” or “tzewee-tzewee-tzewee” phrases, and unlike song of Whistler’s, includes jumbled trilling segments. Call is a short, succinct “wit wit!”.

Brilliant sky-blue warbler of the high canopy. Prefers mature deciduous forest, either in riparian areas or dry mountain ridge-tops. Tends to stay high in the canopy; thus, can be difficult to see blue color. From below, look for white throat and belly, thin necklace, and dark streaks on sides. Female is a unique muted turquoise with pale eyebrow and blurry streaks on sides. Immature birds show yellow wash on underparts. All plumages have bold white wingbars. Easiest to detect in spring and summer by its loud buzzy song, similar to Black-throated Blue but usually richer and more distinctly three-parted; much lower-pitched than Blackburnian Warbler. Winters primarily on the east slope of the Andes from Venezuela to Bolivia.