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This article includes 609 observations, 531 of which were by
This is a continuation of Faxon and Bayer (1991), which
This is a continuation of Bayer (1992), which gave 1849-1990
This is a continuation of Bayer (1992), which gave 1849-1990 results.
This article is based on a total of 204 observations, many
This paper supersedes and significantly revises my compilation
In 1984-1986, Bayer made 171 and 67 waterbird censuses at
This article is based on a total of 353 observations, many of