JEB desktop wallpaper calendar 2016

JEB desktop wallpaper calendar 2016

The Water Repellency and Feather Structure of Cormorants, Phalacrocoracidae
A. M. RIJKE

Summary

1. The water-repellency of the feathers of ducks is greatly increased by a structural feature which can be expressed in terms of diameter and spacing of the barbs and barbules.

2. This structural parameter is smaller for cormorant's feathers and causes a lesser extent of water repellency.

3. The resulting wetness of the feathers is the proximate cause of the cormorant's characteristic habit of wing-spreading.