title: Oral biology and beak disorders of birds.
abstract: The beak, or bill, of the bird is a complicated structure. This article describes beak anatomy as well as disorders of the beak, including trauma and diseases.
authors.affiliation: USGS Patuxent Wildlife Research Center, 12302 Beech Forest Road, Laurel, MD 20708, USA. glenn_olsen@usgs.gov
authors.forename: Glenn H
authors.initials: GH
authors.lastname: Olsen
mesh_terms: D000818:Animals; D001502:Beak / Q000033:anatomy & histology*; D001715:Bird Diseases / Q000473:pathology*; D001717:Birds / Q000033:anatomy & histology*