This term is used when the area around the eye is a darker colour (usually black), than the rest of the head. Often includes the lores and ear coverts [1].
References[]
^Garrigues, Richard and Dean, Robert (2007). Birds of Costa Rica. Zona Tropical Publication. ISBN9780801445873. CS1 maint: Multiple names: authors list (link)
This article is part of Project Glossary, an All Birds project that aims to write comprehensive articles on each term related to animals.