The Mexican violetear (Colibri thalassinus) is a medium-sized, metallic green hummingbird species commonly found in forested areas from Mexico to Nicaragua.

Many birds in this order cannot walk, and thus rarely if ever land on the ground, where they are not well-adapted to forage or to escape from predators.

The tail is a metallic blue-green with more bronzy central feathers and a prominent black subterminal band.

The Mexican violetear breeds from the highlands of southern Mexico south to Nicaragua.

[5] According to IUCN C. thalissinus can be found in much of montane areas of the northern Andes, stretching from Bolivia to Venezuela.

The female is then responsible for choosing a nest location, generally on a low, small horizontal branch in a protected area.

The nest is small and built from various plant materials, spider webs, and down woven together to form a sturdy cup structure.

Many individuals of northern populations move south or and/or to lower elevations following the end of the breeding season (July to November in Mexico), but regular occurrence hundreds of kilometres north of this range suggests a more complex migration strategy.