Williams's Lark

Handsome spinetail with a highly restricted range, known only from arid Andean valleys southeast of the city of Cajamarca in northern Peru. It has a white throat and eyebrow, a streaky breast, and chestnut wings and tail. Plumage is similar to Necklaced Spinetail, but Great is much larger, and the two species do not overlap. Inhabits thorny scrub and cacti. Vocalizations include fast rattles and shrill, doubled chirps.

Small, retiring quail of forest understory. Rarely seen, but can be located by listening for noisy rustling in the leaf litter as birds scratch like chickens. Prefers to run away rather than flush. Loud song often reveals its presence, given mainly early and late in the day: first few notes similar to Little Tinamou song, but then breaks into rollicking choruses that can be almost deafening if close by. Male has rusty face and gray body, female colors reversed, with gray face and rusty body.

Handsome, medium-size hummingbird of humid tropical lowlands. Favors forest edge, second growth, gardens in some areas. Feeds low to high and often comes to feeders. Can be difficult to distinguish from Buff-bellied Hummingbird, which favors drier habitats. Rufous-tailed has a dingier, grayish belly and more extensive rusty on the tail, which lacks the distinct fork often shown by Buff-bellied’s tail. Also compare Cinnamon Hummingbird.