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1 September 2000 Evidence of an Increasing Hooded Merganser Population in Massachusetts
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Abstract

The number of Hooded Merganser (Lophodytes cucullatus) broods hatching in nest houses on 53 study areas in Massachusetts increased by 289% from 1979–1983 to 1994–1998 and the number of areas used increased from 9 of 53 in 1979 to 26 of 53 by 1998. The number of Hooded Mergansers counted on 21 Massachusetts Christmas Bird Count circles from 1979–1983 to 1994–1998 increased by 225%. The increasing trend lines did not match, suggesting different populations. This appears to support reports of increasing Hooded Merganser populations by other northeastern state waterfowl biologists.

H W. Heusmann, T. J. Early, and B. J. Nikula "Evidence of an Increasing Hooded Merganser Population in Massachusetts," The Wilson Bulletin 112(3), 413-415, (1 September 2000). https://doi.org/10.1676/0043-5643(2000)112[0413:EOAIHM]2.0.CO;2
Received: 16 November 1999; Accepted: 1 April 2000; Published: 1 September 2000
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