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Oxyruncus cristatus (Sharpbill)

"The Riddle of digitallibrary.amnh.org/dspace/handle/2246/4831Oxyruncus&..., one of the legendary papers written by the dean of Neotropical ornithologists, Frank M. Chapman, documents a puzzle that is not yet solved and has becoming even more complicated! Here's the form from the Central Andes of Colombia.

 

naturalista.biodiversidad.co/observations/9426920

ebird.org/ebird/view/checklist/S28792678

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Uploaded on April 11, 2012
Taken on April 7, 2002