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Natural selection causes early migration and shorter parental care for shorebirds


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All bird migrations are fraught with danger – from the risk of not finding enough food, to facing stormy weather, and most importantly – trying not to be eaten along the way. Raptors such as peregrine falcons (see picture) are the main predators of migratory birds, and huge flocks of congregating shorebirds can be easy pickings. In a paper, just published in Animal Migration, an open access journal by De Gruyter Open, Dr. Sarah Jamieson and her colleagues provide new evidence that shorebird species can adopt substantially different ways of dealing with this predation pressure.

 

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All bird migrations are fraught with danger – from the risk of not finding enough food, to facing stormy weather, and most importantly – trying not to be eaten along the way. Raptors such as peregrine falcons are the main predators of migratory birds, and huge flocks of congregating shorebirds can be easy pickings. In a new paper, researchers provide new evidence that shorebird species can adopt substantially different ways of dealing with this predation pressure.0R86Os_v7BE

 

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