Foraging niche shift maintains breeding parameters of a colonial waterbird during range expansion

Charlotte Francesiaz, Arnaud Béchet, Aurélien Besnard, Nicolas Sadoul, Thomas Blanchon & Elizabeth Yohannes
Relating the effects of foraging niche variation to reproductive dynamics is critical to understand species response to environmental change. We examined foraging niche variations of the slender-billed gull (Chroicocephalus genei), a nomadic colonial waterbird species during its range expansion along the French Mediterranean coast over a 16 year period (1998-2013). We investigated whether range expansion was associated to a change in chick diet, breeding success and chicks body condition. We also examined whether breeding success...
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