info:oai:pure.iiasa.ac.at:4694info:ofi/fmt:xml:xsd:journalFerriereR.Ferriere, R.CazellesB.Cazelles, B.CezillyF.Cezilly, F.DesportesJ.P.Desportes, J.P.352September 19961095-8282Predictability and chaos in bird vigilant behaviorAnimal Behaviour457-472article