title: Ecology. Weather ruins winter vacations.
abstract: There has been increasing concern over the decline in many migratory bird species. As Saether discusses in his Perspective, evidence is accumulating (Sillett et al.) that climate change resulting from the El Niño Southern Oscillation affects both the survival rate of adult birds at tropical wintering sites and their reproductive rate at summer breeding grounds in the Northern Hemisphere.
authors.affiliation: Zoological Institute, Norwegian University for Science and Technology, N-7491 Trondheim, Norway. bernt-erik.sather@chembio.ntnu.no
authors.forename: B E
authors.initials: BE
authors.lastname: Saether
mesh_terms: D000818:Animals; D001522:Behavior, Animal; D002980:Climate; D017753:Ecosystem; D005260:Female; D005298:Fertility; D005426:Flight, Animal; D017752:Greenhouse Effect; D008297:Male; D011157:Population Dynamics; D012098:Reproduction; D020308:Songbirds / Q000502:physiology*; D014887:Weather