title: Declining songbird population continues to raise issues.
authors.forename: Scott D
authors.initials: SD
authors.lastname: Hull
mesh_terms: D000818:Animals; D000835:Animals, Wild; D002415:Cats / Q000502:physiology*; D011156:Population Density; D011157:Population Dynamics; D011235:Predatory Behavior / Q000502:physiology*; D020308:Songbirds / Q000502:physiology*