1
Published 2007
Conservation International

2
Published 2007
Conservation International

3
Published 2007
Conservation International

4
Published 2006
American Ornithologists' Union

5
by Spear, Larry B.
Published 2007
American Ornithologists' Union

6
Published 2006
American Ornithologists' Union

7
Published 2007
American Ornithologists' Union

8
Published 2008
The American Society of Plant Biologists

10
by Apanius, Victor
Published 2008
American Ornithologists' Union

11
by Oates, John F.
Published 2004
Conservation International Wildlife Conservation Society

13
by Rodrigues, Ana S. L.
Published 2003
Conservation International

14
Published 2007
Conservation International

15
by James, Frances C.
Published 2009
American Ornithologists' Union

16
Published 2010
American Ornithologists' Union

17
Published 2010
American Ornithologists' Union

18
by Winker, Kevin
Published 2010
American Ornithologists' Union

19
Published 2010
American Ornithologists' Union

20
by Brown, Charles Robert
Published 2011
American Ornithologists' Union