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Message: <blockquote data-quote="captaincarot" data-source="post: 1696456" data-attributes="member: 80825">i'm saying that unless someone takes the system as a whole into account then no one is ever going to get to the bottom of what is actually causing the problem.the study actually admits that the squirrels do cause falls in bird populations, blackbirds particularly. fortunately blackbird populations are currently rising. now reintroduce the factor which caused the blackbird numbers to decline initially. the result they drop in the areas without squirrels and fall further in the areas with squirrels. the result even less blackbirds overall.</blockquote>