Adaptive response in waterbirds after mink introduction in subantarctic ecosystems.

Although the survey design was different between the + 5y and + 20y breeding seasons—which could affect nest density comparison—, we think that a decreasing trend in local nest abundance has occurred (i.e., 1.18–1.22 nests/km in 2005–2007 vs 0.66 nests/km in 2021–2022 in upland geese and 0.33–0.39 nests/km vs 0.22 nests/km in flightless steamer ducks).

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Neither bird species showed a clear preference for breeding in sandy coasts after 20 years of mink invasion; flightless steamer ducks showed evidence of a slight trend towards selecting steeper coasts.

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