Definition of allopreen
- On other occasions in succeeding weeks the female allopreened her mate, who sometimes solicited by putting his head down.
- —Lawrence Kilham, The American Crow and the Common Raven, 1991
- Allopreening in birds is usually directed at the top of the head, a part of the body not easily reached by the recipient.
- —James F. Wittenberger, Animal Social Behavior, 1981