Guianan Tyrannulet (Zimmerius acer) [XC494145]
by JAYRSON ARAUJO DE OLIVEIRA from Presidente Figueiredo, Amazonas, Brazil (song)
Guianan Tyrannulet (Zimmerius acer) [XC24005]
by Christian B. Andretti from Serra dos Caraj\u00e1s, PA, Brazil (call)
Subspecies
No subspecies.
Zimmerius gracilipes (Sibley and Monroe 1990, 1993; Stotz et al. 1996) has been split into Slender-footed Tyrannulet (Zimmerius gracilipes) and Guianan Tyrannulet (Zimmerius acer) following SACC (2008).