Listar por autor "Wetmore, Alexander"

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    • A new species of duck from central colombia 

      Wetmore, Alexander; Borrero, José I.
      For a number of years there has been persistent report of "black ducks" from the mountain lakes of central Colombia, with the supposition on the part of hunters that these were the well-known species of that name of ...
      Universidad Nacional de Colombia Revistas electrónicas UN Caldasia. 

    • The subspecific characters and distribution of the new world skimmers - rynchops nigra 

      Wetmore, Alexander
      The distribution of the forms of the New World rayador, or skimmer, Rynchops nigra, and the characters that mark the geographic races, have been matters of interest to me for a number of years, an interest heightened by ...
      Universidad Nacional de Colombia Revistas electrónicas UN Caldasia.