Guianan Tyrannulet (Zimmerius acer) [XC428167]
by JAYRSON ARAUJO DE OLIVEIRA from Parque das Trilhas, Guaramiranga-CE, Cear\u00e1, Brazil (chamado)
Guianan Tyrannulet (Zimmerius acer) [XC232565]
by Peter Boesman from Rio Cristalino Jungle Lodge, Mato Grosso, 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).