The Green Violetear (Colibri thalassinus)
The Green Violetear is locally common in montane regions in Central and South America. It is one of four species of violetears (Colibri), all of which have a patch of elongated violet feathers on the sides of the head. The northernmost subspecies, which occurs from Mexico south to Nicaragua, often has a blue patch on the breast, and may have a blue chin. In the three other subspecies, which occur from Costa Rica south to Argentine, the chin and breast are green.
Hobbs, Mo, M. C. Arizmendi, C. Rodríguez-Flores, and C. Soberanes-González. 2011. Green Violetear (Colibri thalassinus), Neotropical Birds Online (T. S. Schulenberg, Editor). Ithaca: Cornell Lab of Ornithology; retrieved from Neotropical Birds Online: http://neotropical.birds.cornell.edu/portal/species/overview?p_p_spp=238171