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A Guide to Some Possible Bird Species Splits in Costa Rica

10,000 Birds

Bird species that require further research. Nutting’s Flycatcher : The fuzzy issue of the already tough to identify Nutting’s Flycatcher was brought to the attention of birders in 2013 by way of a proposal submitted to the AOU by Steve N. Orange-billed Sparrow song from the Caribbean slope. Pacific slope Streak-chested Antpitta.