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Hauber eggs

Pointy eggs more likely to stay put in birds’ cliffside nests

Pointiness pays off for the eggs of cliff-dwelling birds, a new study reveals.

Natural selection – that merciless weeder-outer of biological designs that are out of step with the times – also is a wily shaper of traits. Exhibit A is the pointy murre egg, according to new research published in the Journal of Experimental Biology.

Common murres and thick-billed murres tend to nest in tightly packed colonies on craggy seaside cliffs. The ledges on which they lay their eggs can be quite narrow, sometimes “as shallow as the egg is long,” the authors of the new study wrote.

Read the full article at the Illinois News Bureau


Publication Date: 08/27/2018
Photo credits: L. Brian Stauffer
Editor: Diana Yates