Glossy-black Thrush

The glossy-black thrush is 23 to 25 cm (9.1 to 9.8 in) long and weighs 70 to 90 g (2.5 to 3.2 oz). The species is sexually dimorphic. Adult males of the nominate subspecies T. s. serranus are almost entirely glossy black with a yellow eye-ring and a yellow bill. Adult females have a dark olive-brown head and upperparts, slightly paler and redder underparts, a brownish bill, and no eye-ring. Both sexes have yellow legs and feet. Juvenile males have dark sooty brown upperparts and juvenile females have warm brown upperparts, both with buff spots and streaks. Voice: The glossy-black thrush sings mostly before dawn, usually from an exposed perch in the forest canopy. Its song is unmusical, "a rapidly mumbled te-do-de-de-do-deet, all notes run together, rather shrill, gradually rising throughout, and monotonously repeated at short intervals". Another author similarly describes it as "uninspired, a short and tirelessly repeated phrase that rises toward end, e.g.