The garden emerald (Chlorostilbon assimilis) is a small hummingbird that is an endemic resident breeder in Costa Rica and western Panama. It was formerly considered to be a subspecies of the blue-tailed emerald.This is a species of open habitats, including bushy savanna, clearings, cultivation, and gardens. It can be found in the Pacific lowlands and hills, locally up to an elevation of 1500 m.The nest is a neat cup of plant fibres decorated on the outside with bark fragments.