title: Experimental Ascaridia columbae infections in budgerigars.
mesh_terms: D000818:Animals; D001198:Ascaridiasis / Q000635:transmission / Q000662:veterinary*; D001715:Bird Diseases / Q000469:parasitology* / Q000635:transmission; D010856:Columbidae / Q000469:parasitology; D009349:Nematode Infections / Q000662:veterinary*; D010270:Parasite Egg Count; D010311:Parrots / Q000469:parasitology*; D011563:Psittaciformes / Q000469:parasitology*