Lesser wagtail-tyrant

The lesser wagtail-tyrant is 13 cm (5.1 in) long. The sexes have the same plumage; males are slightly larger than females. Adults have a thin pale yellow supercilium, an indistinct pale yellow eye-ring, and a blackish line through the eye on an otherwise pale yellowish face. Their crown and upperparts are grayish olive. Their wings are dusky with wide white edges on the innermost flight feathers and the coverts; the last show as a large white patch on the closed wing. Their tail is long and dusky. The outer three pairs of feathers have large white ovals at their tips and the outermost have a wide yellowish white band at their base and white outer webs. Their throat and underparts are medium yellow with a slight olive to grayish olive tinge on the breast. Both sexes have a dark brown iris, a black bill, and black legs and feet.