Dot-winged Antwren

The dot-winged antwren is 10 to 12.5 cm (3.9 to 4.9 in) long and weighs 7.5 to 11.5 g (0.26 to 0.41 oz). The species has a long graduated tail. The sexes have different plumage. Adults of the nominate subspecies M. q. quixensis are mostly black. They have a partly concealed white patch between their shoulders. Their greater wing coverts have large white tips and the other coverts smaller ones. Their wing's underside shows additional white areas. Their flight feathers are dark gray with a brown tinge. Voice: The dot-winged antwren's song varies among the subspecies and sexes but is generally "an accelerating series of notes that shorten in length". It is described as a "slightly accelerating tip-tip-Tip-Tip-Tip-Tip-Tip-Tip-teu-teu-teu-teu'teu" in northern Central America and "a series of high, fast notes, which rise initially in pitch and intensity before descending" in Costa Rica.