On the middle ear of birds.
D000717:Anatomy, Comparative; D000818:Animals; D001717:Birds / Q000033:anatomy & histology*; D010856:Columbidae; D004429:Ear Ossicles / Q000033:anatomy & histology; D004432:Ear, Middle / Q000033:anatomy & histology / Q000502:physiology; D005777:Geese; D006801:Humans; D008961:Models, Structural; D011200:Poultry; D014433:Tympanoplasty