Predicted Antwren

The predicted antwren is 11 to 12 cm (4.3 to 4.7 in) long and weighs about 11 g (0.39 oz). Adult males have a black crown and nape, a long whitish supercilium, and a black streak through the eye. The rest of their upperparts are gray with black on the scapulars. Their wings are black with white tips on the coverts and white edges on the flight feathers. Their tail is black with large white feather tips and white edges on the outermost. Their throat is pale creamy white and their breast and belly whitish. Adult females have a rusty forehead and lores, and a black crown with white speckles. Voice: The predicted antwren's song is "a soft, purring, rolling trill...which initially rises in frequency...before declining again to a frequency similar to that on which it started". The song is part of the evidence for its treatment as a species, as its pace and the number of repeated notes differ from the songs of visually similar others of its genus.