title: Taste-aversion conditioning of crows to control predation on eggs.
abstract: Free-ranging crows (Corvus brachyrhynchos) that ate chicken eggs that were painted green and contained a nonlethal toxin subsequently avoided green eggs at various locations, whether or not they contained toxin. The crows also continued to eat unpainted and nontoxic chicken eggs. Illness-induced aversions among predators in nature may be a powerful determiner of the evolution of Batesian mimicry and, in human hands, serve as a practical tool for wildlife ecologists.
authors.forename: L K
authors.initials: LK
authors.lastname: Nicolaus
authors.forename: J F
authors.initials: JF
authors.lastname: Cassel
authors.forename: R B
authors.initials: RB
authors.lastname: Carlson
authors.forename: C R
authors.initials: CR
authors.lastname: Gustavson