Jamaica Bay Studies. IV. Factors affecting distribution of greater scaup Aythya marila in a coastal estuary in New York, USA.

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Abstract

Greater scaup migrate through Jamaica Bay Wildlife Refuge on the east coast of North America, and small numbers overwinter there. Scaup arrived on the refuge in late September and were present until May, although peak numbers of birds were present from October through December, and in March and April. Scaup concentrated on the tidal bay on falling and low tides, and used the freshwater ponds on rising tides. Scaup concentrated on the bay during low temperatures and on the ponds during higher temperatures. Wind velocity affected scaup mainly in influencing flock size; scaup formed larger, denser flocks at high velocities. Date (only on the ponds), tidal factors, wind velocity and temperature were significant variables contributing to the variability in the number of scaup on the 3 census areas.-from Author

Original languageEnglish (US)
Pages (from-to)309-316
Number of pages8
JournalOrnis Scandinavica
Volume14
Issue number4
DOIs
StatePublished - 1983

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Agricultural and Biological Sciences(all)
  • Earth and Planetary Sciences(all)

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