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Shrinking shorebird pays the bill for rapid Arctic warming while wintering in the tropics

13 May 2016
Red knot (c) Jan van de Kam

Red knots migrate between their breeding grounds in the Arctic and their wintering grounds in West Africa. Chicks currently born under rapidly warming conditions attain smaller sizes before migration starts, because they miss the insect peak. If they reach their wintering grounds in the tropics, they are faced with a second disadvantage: their shorter bills cannot reach their favourite shellfish food. This results in an evolutionary force towards smaller-sized birds with large bills.

These findings will be published Friday 13 May 2016 in Science by an international team of researchers from the Netherlands (NIOZ and Univ. Groningen), Australia, France, Poland and Russia.

Source: Press Release NIOZ Royal Netherlands Istitute for Sea Research

Last modified:13 March 2020 02.09 a.m.
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