Sooty Tyrannulet
Serpophaga nigricans
The sooty tyrannulet is overall a dark grey colour, with a brownish tinge to its upperparts, paler underparts, and the top of its head being somewhat darker. It has a white strip on its crown which is usually only partially visible, and its chin is whitish. On its wings it has two pale grey wingbars, and the flight feathers closest to its body are whitish. Its tail is black. It has brown irises, a black beak, and black legs. There is no difference between males and females, and there the juveniles have not been described. The sooty tyrannulet averages 118–127 mm (4.6–5.0 in) in total length.
ID text from Wikipedia, CC BY-SA 4.0
Torrent Tyrannulet
Serpophaga cinerea
The torrent tyrannulet is 9.5 to 12 cm (3.7 to 4.7 in) long; eight individuals weighed an average of 8.3 g (0.29 oz). Adults of the nominate subspecies have a mostly black head with a partially hidden white patch in the center of the crown. Their back, rump, and uppertail coverts are gray. Their wings are mostly black with gray or grayish white edges on the coverts. Their tail is black and sometimes has indistinct grayish white tips on the feathers. Their chin and throat are grayish white. The center of their breast and their belly are white and their undertail coverts slightly grayish. Voice: The torrent tyrannulet's dawn song in Costa Rica is a slow series of chip notes separated by as much as 10 seconds. Pairs also vocalize "in unison a short refrain made up of a sharp chip, rapidly repeated". Its song in the Andes has been described as "a high, thin seek!
ID text from Wikipedia, CC BY-SA 4.0
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Sooty Tyrannulet and Torrent Tyrannulet.