The Water Repellency and Feather Structure of Cormorants, Phalacrocoracidae

Author:

RIJKE A. M.1

Affiliation:

1. Department of Chemistry, University of Cape Town, Rondebosch, C.P., South Africa; Institute of Molecular Biophysics, Florida State University, Tallahassee, Florida 32306

Abstract

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.

Publisher

The Company of Biologists

Subject

Insect Science,Molecular Biology,Animal Science and Zoology,Aquatic Science,Physiology,Ecology, Evolution, Behavior and Systematics

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