Masked Yellowthroat

The masked yellowthroat is 12.7 to 14 cm (5.0 to 5.5 in) long and weighs 11 to 15 g (0.39 to 0.53 oz). The species is sexually dimorphic. Adult males have a wide black mask from their forehead and forecrown around the eye and including the ear coverts. They have a pale slate-gray crown. Their nape and upperparts are yellow-olive. Their flight feathers' upper surface is brown with olive-green edges and the lower surface plain brown. Their upperwing coverts are brownish with yellow-olive margins. Their tail's upper surface is yellow-olive and its lower surface yellow-green. Voice: The male masked yellowthroat sings a "short sweet warble of about 2 long, that has been transcribed as tee-chee-chee teecheweet teecheweet". It has a long call, a "melodious descending series of some 20 notes with a total duration of ⁓3 ". Both sexes make a "short raspy note prew or chrew". Most song is in the morning.