From Neotropical Birds Online:
New on Neotropical Birds Online: completed account for the endangered Yellow-billed Cotinga (Carpodectes antoniae). This account features what may be the first-ever images of a juvenile of this beautiful, ghostly, and declining species.
Yellow-billed cotingas live only in southern Costa Rica and adjacent southwestern Panama.
Dear Kitty. Some blog 
This is beautiful! Did you do this artwork?
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No, it is by John Gerrard Keulemans
http://en.wikipedia.org/wiki/John_Gerrard_Keulemans
from the nineteenth century.
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Wow! I have never seen it. Thanks for letting me know!
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My pleasure š Keulemans was a rather famous ornithological illustrator then.
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Family tree traces evolution of mysterious birds:
http://www.world-science.net/othernews/141014_cotinga.htm
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