A Guide to Some Possible Bird Species Splits in Costa Rica
10,000 Birds
MARCH 21, 2015
Bird species that require further research. For the birder, this means that no matter how many Clapper Rails you have seen in the salt marshes of New Jersey, North Carolina, or Texas, that Clapper Rail that lurks in the Black Mangroves at Chomes, Costa Rica is going to be a different species.
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