A Guide to Some Possible Bird Species Splits in Costa Rica
10,000 Birds
MARCH 21, 2015
This bunch of possible Costa Rican crypto birds can be grouped into four main categories: (1). Taxa that could end up being split into one species occurring north of the Isthmus of Tehuantepec, and one south of the isthmus. (2). Two of those vocal groups are shown by birds in Costa Rica and neither of those are heard in South America.
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