Wintering diving duck use of coastal ponds: an analysis of alternative hypotheses
Article Abstract:
Wintering diving ducks, namely, wintering redheads and lesser scaup, were observed to test predictions of the dietary freshwater, alternate food and disturbance hypotheses. By studying their activity budgets and habitat characteristics, it was found that ponds preferred by redheads and lesser scaup had deeper water, lower salinities and were nearer to estuarine feeding sites than ponds they do not use. Their activity budgets and pond resource use coincide with predictions of the dietary freshwater hypothesis as they go against those of the alternate food and disturbance hypotheses.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1996
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Individual turnover among wintering teal in Camargue: a mark-recapture study
Article Abstract:
Researchers used capture-mark-recapture data to analyse the individual turnover of teal in the winter months in Camargue. They found that the concept that there is a massive arrival of birds in the fall and a great departure in the spring is open to question. There is a stable population which spends over 10 days in the area, but the majority spend less than 10 days in the Camargue. Movement to other wintering areas does not explain this phenomenon as there is no known wintering area south of the Camargue. Male and female teal displayed similar turnover rates.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1997
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Foods used by male mallards wintering in southeastern Missouri
Article Abstract:
The diet of mallard ducks during their winter migration to southeastern Missouri was evaluated using the parameters of age, pair status, molt status, habitat, year, season and diet composition. Diet composition was largely influenced by the area inhabited by the ducks. Plant materials/seed constitute the bulk of food ingested by male mallard ducks (approximately 40-60%) and invertebrates accounting for about 30%. The winter diet of mallard ducks are determined more by environmental factors than by physiological factors.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1996
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