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Résumé :
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In non-colonial species, the spatial pattern in which nests occur in a population often varies among years and with habitat quality and population size. In aggregated patterns nests occur nearer than expected by chance and apparently suitable habitat remains unoccupied. We assessed annual (12 years) and spatial (10–100 km) variation in nest dispersion using distance to nearest conspecific nests for a small, color-marked population (19–64 adults annually) of Snowy Plover Charadrius nivosus breeding in coastal northern California. Across 100 km of suitable habitat, average distance to conspecific nest was 1,284 m (median = 182 m, SD = 4,019 m, range = 20–41,519 m, n = 210 nests); 19% of nests were
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