Center for Avian Cognition

 

Date of this Version

1977

Citation

Published in Science, New Series, Vol. 195, No. 4278 (Feb. 11, 1977), pp. 580-582.

Comments

Published by American Association for the Advancement of Science.

Abstract

Blue jays learned to respond differentially to the presence or absence of Catocala moths in slides. This detection of the moths by the jays was affected by the background upon which the moth was placed and its body orientation, thus providing an objective measure of crypticity. These procedures are useful for the study of visual detection of prey.