A Guide to Some Possible Bird Species Splits in Costa Rica
10,000 Birds
MARCH 21, 2015
Bird species that require further research. Black-faced Antthrush : Just as the Maya Antthrush sounds different from the birds in Costa Rica, so do the birds in Amazonia, Trinidad and Tobago, and the Guyanas. Orange-billed Sparrow song from the Caribbean slope. Two subspecies of the same species that differ within Costa Rica. (4).
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