The kinglet manakin or eastern striped manakin (Machaeropterus regulus) is a small South American species of passerine bird in the manakin family Pipridae. It is found in the Atlantic Forest of south eastern Brazil. It was formerly considered conspecific with the striolated manakin (Machaeropterus striolatus) with the common name "striped manakin". Males have a bright red crown, which the females lack.
Loiselle, Bette A., John G. Blake, Renata Durães, Brandt T. Ryder, and Wendy Tori. "Environmental and spatial segregation of leks among six co-occurring species of manakins (Pipridae) in eastern Ecuador." Auk, The (2007). BNet Research Center. Evergreen State College. 9 Nov. 2007 [1].