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Message: <blockquote data-quote="Farnboro John" data-source="post: 1712048" data-attributes="member: 36432">Actually it doesn't indicate anything of the sort.  there are a number of hypotheses that could cover the results, e.g:1.  Bias in dispersal direction due to factors other than water crossing2.  Level of losses post-ringing actually resulting in no need to move long distances to survive and then join the breeding population (what ringing recoveries/controls are there from within Sweden?)3.  Different level of ringing effort (or bias in habitat checked) between Denmark and SwedenWhat is the expected/demonstrated level of ringing recovery of Eagle Owl per no. of birds ringed?  Is this higher or lower than for other species?Too wide a conclusion from too little evidence I suspect.John</blockquote>