dcsimg
Please read BHL's Acknowledgment of Harmful Content
Sort By:
  1. By: Clark, William S.
    Type: Article
    In: Bulletin of the African Bird Club
    Volume: 6
    Issue: 2
    Date: 1999-09
    Page Range: 115--116
    Publication Info: Cambridge, African Bird Club, 1994-
  2. By: Clark, William S. - Patten, Michael A - Wilson, John C
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 129
    Date: 2009
    Page Range: 254--255
    Publication Info: London, British Ornithologists' Club, 1893-
  3. By: Clark, William S. - Clarke, Roger
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 118
    Date: 1998
    Page Range: 52--54
    Publication Info: London, British Ornithologists' Club, 1893-
  4. By: Clark, William S.
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 132
    Issue: 4
    Date: 2012
    Page Range: 295--298
    Publication Info: London, British Ornithologists' Club, 1893-
  5. By: Clark, William S. - Schmitt, J
    Type: Article
    In: The journal of raptor research
    Volume: 27
    Issue: 1
    Date: 1993
    Page Range: 95--95
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  6. By: Clark, William S.
    Type: Article
    In: Bulletin of the African Bird Club
    Volume: 7
    Issue: 1
    Date: 2000-03
    Page Range: 13--17
    Publication Info: Cambridge, African Bird Club, 1994-
  7. By: Clark, William S. - Schmitt, N. John
    Type: Article
    In: Forktail
    Volume: 8
    Date: 1993
    Page Range: 7--9
    Publication Info: Oxford,
  8. By: Clark, William S. - Witt, Christopher C
    Type: Article
    In: The Wilson journal of ornithology
    Volume: 118
    Issue: 1
    Date: 2006
    Page Range: 42--52
    Publication Info: Lawrence, KS, Wilson Ornithological Society, 2006-
  9. By: Clark, William S. - Edelstam, Carl
    Type: Article
    In: Bulletin of the African Bird Club
    Volume: 8
    Issue: 2
    Date: 2001-09
    Page Range: 138--139
    Publication Info: Cambridge, African Bird Club, 1994-
  10. By: Clark, William S.
    Type: Article
    In: Bulletin of the African Bird Club
    Volume: 8
    Issue: 1
    Date: 2001-03
    Page Range: 59--59
    Publication Info: Cambridge, African Bird Club, 1994-
  11. By: Farquhar, Charles Craig - Clark, William S. - Wright, Robert G. - Coello, M
    Type: Article
    In: The journal of raptor research
    Volume: 28
    Issue: 4
    Date: 1994
    Page Range: 274--275
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  12. By: Clark, William S. - Christy, Patrice
    Type: Article
    In: Bulletin of the African Bird Club
    Volume: 13
    Issue: 2
    Date: 2006-08
    Page Range: 207--210
    Publication Info: Cambridge, African Bird Club, 1994-
  13. By: Buij, Ralph, - Clark, William S. - Allan, David G
    Type: Article
    In: Bulletin of the African Bird Club
    Volume: 23
    Issue: 1
    Date: 2016-03
    Page Range: 46--63
    Publication Info: Cambridge, African Bird Club, 1994-
  14. By: Clark, William S. - Schmitt, N. John
    Type: Article
    In: The journal of the Bombay Natural History Society
    Volume: 89
    Date: 1992
    Page Range: 1--3
    Publication Info: Bombay Bombay Natural History Society 1886-
  15. By: Heredia, B - Clark, William S.
    Type: Article
    In: Raptor research
    Volume: 18
    Issue: 1
    Date: 1984
    Page Range: 30--31
    Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]
  16. By: Clark, William S. - Yosef, Reuven
    Type: Article
    In: The journal of raptor research
    Volume: 31
    Issue: 4
    Date: 1997
    Page Range: 317--320
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  17. By: Clark, William S.
    Type: Article
    In: Raptor research
    Volume: 19
    Issue: 2-3
    Date: 1985
    Page Range: 85--93
    Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]
  18. By: Clark, William S.
    Type: Article
    In: The journal of raptor research
    Volume: 26
    Issue: 3
    Date: 1992
    Page Range: 196--197
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  19. By: Clark, William S.
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 119
    Date: 1999
    Page Range: 56--59
    Publication Info: London, British Ornithologists' Club, 1893-
  20. By: Clark, William S.
    Type: Article
    In: Bulletin of the African Bird Club
    Volume: 10
    Issue: 2
    Date: 2003-09
    Page Range: 107--108
    Publication Info: Cambridge, African Bird Club, 1994-
  21. By: Clark, William S. - Paulson, Dennis R.
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 122
    Date: 2002
    Page Range: 156--157
    Publication Info: London, British Ornithologists' Club, 1893-
  22. By: Clark, William S. - Fisher, David - Finch, Brian W. - De Bruijn, Bernd - Shani, Itai
    Type: Article
    In: Bulletin of the African Bird Club
    Volume: 12
    Issue: 2
    Date: 2005-08
    Page Range: 150--152
    Publication Info: Cambridge, African Bird Club, 1994-
  23. By: Clark, William S. - Barlow, Clive R
    Type: Article
    In: Bulletin of the African Bird Club
    Volume: 11
    Issue: 1
    Date: 2004-03
    Page Range: 27--29
    Publication Info: Cambridge, African Bird Club, 1994-
  24. By: Clark, William S.
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 125
    Date: 2005
    Page Range: 149--153
    Publication Info: London, British Ornithologists' Club, 1893-
  25. By: Clark, William S. - Duffy, Katharine - Gorney, Edna - Mcgrady, M - Schultz, C
    Type: Article
    In: The journal of raptor research
    Volume: 22
    Issue: 2
    Date: 1988
    Page Range: 53--58
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  26. By: Clark, William S.
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 127
    Date: 2007
    Page Range: 110--117
    Publication Info: London, British Ornithologists' Club, 1893-
  27. By: Clark, William S. - Banks, Richard C. (Richard Charles),
    Type: Article
    In: The Wilson bulletin
    Volume: 104
    Issue: 4
    Date: 1992
    Page Range: 571--579
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  28. By: Clark, William S.
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 112
    Date: 1992
    Page Range: 150--157
    Publication Info: London, British Ornithologists' Club, 1893-
  29. By: Gorney, Edna - Clark, William S. - Yom-Tov, Y.
    Type: Article
    In: The Wilson bulletin
    Volume: 111
    Issue: 2
    Date: 1999
    Page Range: 181--187
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  30. By: Clark, William S. - Wheeler, Brian K.,
    Type: Article
    In: The journal of raptor research
    Volume: 23
    Issue: 3
    Date: 1989
    Page Range: 116--117
    Publication Info: Hastings, Minn, Raptor Research Foundation, ©1987-
  31. By: Clarke, Rohan H. (Rohan Hartley), - Prakash, V - Clark, William S. - Ramesh, N - Scott, D
    Type: Article
    In: Forktail
    Volume: 14
    Date: 1998
    Page Range: 70--71
    Publication Info: Oxford,