Do nest exclosures affect the behaviour of Piping Plovers (Charadrius melodus melodus) and their predators?

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Abstract:

Predators are a threat to many ground-nesting shorebirds; however, nest exclosures are a tool used by managers to reduce nest predation. Others have found that nest exclosures increase hatching success, but there has been concern that they may also increase adult mortality and nest abandonment. We examined the effects of nest exclosures on the behaviour of incubating Piping Plovers (Charadrius melodus melodus Ord, 1824) and their predators on nesting beaches in eastern Canada. Using a combination of field observations, video monitoring, and an artificial nest experiment, we found that adult incubation behaviour did not differ between exclosed and unexclosed nests. Predators, however, visited exclosed nests more often than unexclosed nests and spent more time in the vicinity of exclosed nests than unexclosed nests at one of our sites. These findings suggest that concerns over increased adult mortality and nest abandonment are plausible and require further study.

Keywords: Charadrius melodus melodus; Piping Plover; abandon de nids; adult mortality; exclos; mortalité chez les adultes; nest abandonment; nest exclosure; pluvier siffleur; predation; prédateurs

Document Type: Research Article

DOI: http://dx.doi.org/10.1139/cjz-2013-0205

Affiliations: Department of Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada.

Publication date: January 1, 2014

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  • Published since 1929, this monthly journal reports on primary research contributed by respected international scientists in the broad field of zoology, including behaviour, biochemistry and physiology, developmental biology, ecology, genetics, morphology and ultrastructure, parasitology and pathology, and systematics and evolution. It also invites experts to submit review articles on topics of current interest.
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