@article{article129a3b1c,
title   = {Vocalization and associated behaviors of the sombre hummingbird (Aphantochroa cirrhochloris) and the rufous-breasted hermit (Glaucis hirsutus)},
author = {Ferreira, Adriana R. J. and Smulders, Tom V. and Mellom, Claudio V. and Jarvis, Erich D. and Sameshima, Koichi},
year = {2006},
journal   = {The american ornithologist's union}
}