4.0 Article

Herring Gulls (Larus argentatus) Depredate Chimney Swifts (Chaetura pelagica) at a Migratory Roost

Journal

WILSON JOURNAL OF ORNITHOLOGY
Volume 129, Issue 3, Pages 632-636

Publisher

WILSON ORNITHOLOGICAL SOC
DOI: 10.1676/16-065.1

Keywords

Chimney Swift; communal roost; Herring Gull; predation; range overlap

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Funding

  1. National Science and Engineering Research Council of Canada
  2. Species at Risk Research Fund for Ontario
  3. Algoma University Research Fund

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We describe a new predator-prey relationship between Herring Gulls (Larus argentatus) and Chimney Swifts (Chaetura pelagica) at a communal roost in Sault Ste. Marie, ON, Canada. In a season-long study in 2015, we document 38 instances of predation, an estimate which likely underestimates the extent of total predation pressure. Chimney Swifts were captured on-the-wing by Herring Gulls.

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