1
by Oates, John F.
Published 2004
Conservation International Wildlife Conservation Society

3
by Rodrigues, Ana S. L.
Published 2003
Conservation International

4
Published 2007
Conservation International

5
Published 2007
Conservation International

6
Published 2007
Conservation International

7
Published 2007
Conservation International

8
Published 2006
American Ornithologists' Union

9
by Spear, Larry B.
Published 2007
American Ornithologists' Union

10
Published 2006
American Ornithologists' Union

11
Published 2007
American Ornithologists' Union

12
by Askins, Robert A.
Published 2007
American Ornithologists' Union

13
by Apanius, Victor
Published 2008
American Ornithologists' Union

14
by James, Frances C.
Published 2009
American Ornithologists' Union

15
Published 2010
American Ornithologists' Union

16
Published 2010
American Ornithologists' Union

17
by Winker, Kevin
Published 2010
American Ornithologists' Union

18
Published 2010
American Ornithologists' Union

19
by Brown, Charles Robert
Published 2011
American Ornithologists' Union

20
by Smith, N. Adam
Published 2011
American Ornithologists' Union