title: Parasites take control.
authors.forename: R D
authors.initials: RD
authors.lastname: Gregory
authors.forename: P J
authors.initials: PJ
authors.lastname: Hudson
mesh_terms: D000818:Animals; D001715:Bird Diseases / Q000469:parasitology; D006790:Host-Parasite Interactions; D009174:Mycoplasma / Q000472:pathogenicity / Q000502:physiology*; D009656:North America; D011157:Population Dynamics; D020308:Songbirds / Q000469:parasitology*