Grey-crowned flatbill (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Grey-crowned flatbill" in English language version.

refsWebsite

Global rank English rank

3^rd place

1,007^th place

1,255^th place

88^th place

160^th place

2^nd place

books.google.com

Schulenberg, Thomas S.; Stotz, Douglas F.; Lane, Daniel F.; O'Neill, John P.; Parker, Theodore A. III (2010). Birds of Peru. Princeton University Press. p. 438. ISBN 978-1-4008-3449-5.
Ridgely, Robert S.; Tudor, Guy (2009). Field Guide to the Songbirds of South America: The Passerines. University of Texas Press. pp. 240–242. ISBN 978-0-292-71748-0.

Gill, F., Wright, M. & Donsker, D. (2009). IOC World Bird Names (version 2.2). Available at http://www.worldbirdnames.org/ Accessed 30 August 2009