Tropical Kingbird

An adult Tropical Kingbird is 22 cm (8.7 in) long and weighs 39 g (1.4 oz). The head is pale grey, with a darker eye mask, an orange crown stripe, and a heavy grey bill. The back is greyish-green, and the wing and forked tail are brown. The throat is pale grey, becoming olive on the breast, with the rest of the underparts being yellow. The sexes are similar, but young birds have pale buff edges on the wing coverts.

The call is a high-pitched twittering trill, tree-e-e-e-e-e-e, with a more complex version sung by the male at dawn.

These birds aggressively defend their territory against intruders, even much larger birds such as Magnificent Frigatebirds, toucans, caracaras or hawks.