Results of Harlequin Duck Histrionicus Histrionicus Surveys in 1990 On the Fla

John C Carlson

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Sexually mature birds that refrain from breeding), and unsuccessful breeding females. This is similar to the 47-50% nonbreeders found in Alaska by Dzinbal (1982). Wallen (1987) found that 62% of the harlequins in his study area were nonbreeders. He also did not differentiate oetween nonbreeders and failed breeders. Bengston (1971) surmised that all females remaining on the breeding grounds without broods were nonbreeders not unsuccessful nesters. He felt that most nonbreeding female harlequins ...were first year birds that do not even enter the breeding areas in Iceland. 15 # DATE CREEK OBSERVATION 1 5/6/90 TRAIL OBSERVED 4 PAIR FEEDING AND LOAFING IN ONE SPOT NEAR BACKWATER AREA I HAD OBSERVED A BROOD LAST YEAR. T37N. R22W. SECT30, SE1/4, NE1/4. 2 * 5/10/90 3 5/14/90 WOUNDED BUCK TRAIL 1 MALE OBSERVED FEEDING IN STREAM T29N. R18W. SECT 19, SW1/4 OBSERVED 1 PAIR ALONG CREEK FEEDING AND LOAFING . T37N. R22W. SECT 33, SW1/4. NE1/4 4 5/14/90 TRAIL OBSERVED 1 PAIR LOAFING ON CREEK T37N. R22W.

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