Guianan Tyrannulet (Zimmerius acer) [XC5210]
by Sidnei Dantas from Serra de Baturit\u00e9, Cear\u00e1, Brazil (song)
Guianan Tyrannulet (Zimmerius acer) [XC212592]
by Peter Boesman from Serra de Baturite, Cear\u00e1, 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).