Species limits in Pale-tipped Tyrannulets (Inezia: Tyrannidae)

New information on the vocalizations and behavior of populations of the Pale-tipped Tyrannulet (Inezia subflava), along with analysis of biometric and plumage characters, reveal that it actually consists of two species-level groups: a northern/Guianan group, the member taxa of which are weakly differentiated from one another; and a group whose distribution is primarily Amazonian, the member taxa of which are morphologically distinct but vocally and behaviorally similar to one another.