The science of form or shape; used in ornithology [or biology] to cover all external characteristics of birds, including colouration; the term now includes also the study of internal characteristics, or anatomy[1] .
References[]
^Terres, John K. (1980). The Audubon Society Encyclopedia of North American Birds. Alfred A. Knopf, Inc. ISBN0394466519.
This article is part of Project Glossary, an All Birds project that aims to write comprehensive articles on each term related to animals.