Tawny-shouldered Blackbird

The tawny-shouldered blackbird is 19 to 22 cm (7.5 to 8.7 in) long. Males weigh an average of 38.3 g (1.4 oz) and females an average of 34.5 g (1.2 oz). Adult males of the nominate subspecies are mostly black with a slight bluish gloss. Their lesser and median upperwing coverts are tawny and the median coverts have yellowish cream tips. Adult females are duskier than males and lack the bluish gloss. They have a smaller amount of tawny on the coverts and the median coverts are partly black. Both sexes have a dark brown iris, a black bill, and black legs and feet. Voice: Both sexes of the tawny-shouldered blackbird sing, "1–2 protracted buzzing notes, sometimes introduced with shorter buzz at higher pitch", and pairs sometimes duet. Their calls include "chuk or cheek" and "nasal and metallic notes".