Range map of  White-eared Ground-Sparrow (Melozone leucotis)
Adapted from:

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
Luis Sandoval, Pierre-Paul Bitton and Alana D. Demko. Phenotypic variation and vocal divergence reveals a species complex in White-eared Ground-sparrows (Cabanis) (Aves: Passerellidae). July 2017 Zootaxa 4291(1):155. DOI: 10.11646/zootaxa.4291.1.9
Cephas