Range map of  Green-backed Sparrow (Arremonops chloronotus)
Adapted from: 

Green-backed Sparrow. Marîa Félix Ramos-Ordoñez, Claudia I. Rodríguez-Flores, Carlos A. Soberanes-González, Marîa del Coro Arizmendi, Guy M. Kirwan, and Thomas S. Schulenberg, Birds of the World. The Cornell Lab of Ornithology. https://birdsoftheworld.org
Birds of Central America : Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica, and Panama. Andrew C. 2018. Vallely and Dale Dyer. Princeton, New Jersey : Princeton University Press. ISBN:9780691184159 ISBN:0691184151
Cephas