Notes on a plover briefly incubating an oystercatcher nest in Patagonia.
Authors
JOSÉ O. VALDEBENITO
Citation
VALDEBENITO, J.O. 2024. Notes on a plover briefly incubating an oystercatcher nest in Patagonia..
Marine Ornithology 52: 113
- 115
http://doi.org/10.5038/2074-1235.52.1.1564
Received 25 November 2023, accepted 16 January 2024
Date Published: 2024/04/15
Date Online: 2024/03/31
Key words: Magellanic Oystercatcher, mutualism, nest usurpation, supernormal stimuli, Two-banded Plover, wader
Abstract
A breeding female Two-banded Plover Charadrius falklandicus was observed incubating the eggs of a Magellanic Oystercatcher Haematopus leucopodus while the nest was unattended by the oystercatcher. The behaviour was likely triggered by the plover's nest becoming momentarily inaccessible, and so, being in incubation mode, the bird responded by incubating the nearest nest available. This is the first report of such behaviour while the oystercatcher was nearby, and the plover nest was still active and in sight.
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