Argus bare-eye explained

The Argus bare-eye (Phlegopsis barringeri) is a species of bird in the family Thamnophilidae.Known only from a single male specimen taken in 1951 in Colombia, its taxonomic validity is questionable, and most authorities do not recognize it, following Willis (1979) and Graves (1992), where it was shown to be a hybrid between the black-spotted and the reddish-winged bare-eye.

References

• Graves, G. R. (1992). Diagnosis of a hybrid antbird (Phlegopsis nigromaculata X Phlegopsis erythroptera) and the rarity of hybridization among suboscines. Proc. Biol. Soc. Wash. 105: 834–340.
• Willis, E. O. (1979). Comportamento e ecologia da mãe-da-taóca, Phlegopsis nigromaculata (D'Orbigny & Lafresnaye)(Aves, Formicariidae). Revista Brasileira de Biologia. 39 (1): 117–159.