Black-polled Yellowthroat

The black-polled yellowthroat is 12.5 to 13 cm (4.9 to 5.1 in) long and weighs 9.5 to 12 g (0.34 to 0.42 oz). The species is sexually dimorphic. Adult males of the nominate subspecies have a dusky blackish crown that merges into a black mask that extends onto the ear coverts. Their nape, upperparts, wings, and tail are warm brownish olive. Their throat and underparts are a rich yellow with a brownish cinnamon or ochre wash on the breast and flanks. Females have a mostly dark olive-gray head with a paler supercilium and stripe above the lores. Their upperparts, wings, and tail are dark grayish. Voice: The black-polled yellowthroat's song is "a distinctive series of loud ringing notes on one pitch, usually changing mid-way through into descending drier chips, e.g., chree-chree-chree-chree-chree…chi-chi-chi-chi-chi or chree-chree-chree-chree-chree… chee-chee-chee-chee-chee". Its calls are described as "a dry trrk, a loud rasping chick, a slightly nasal chreh, and a more liquid chwik".