title: Occlusion of the syrinx as a manifestation of aspergillosis in Canada geese.
mesh_terms: D000818:Animals; D001228:Aspergillosis / Q000473:pathology / Q000662:veterinary*; D005777:Geese; D011201:Poultry Diseases / Q000473:pathology*; D014133:Tracheal Diseases / Q000473:pathology / Q000662:veterinary*