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Message: <blockquote data-quote="Ilya Maclean" data-source="post: 1535333" data-attributes="member: 46774">One of the reports by Prof Brown is available <a href="http://www.songbird-survival.org.uk/media/files/mammal_review.pdf" target="_blank">here</a>. I'm fairly confident the BTO & CAER will take into account minor details like the fact that almost all of the patterns presented  would occur in any case, if the predators and prey examined had different habitat requirements (and that's just the tip of the iceberg....)In terms of bad science, <a href="http://www.songbird-survival.org.uk/predators/predation-by-sparrowhawks/" target="_blank">this</a> has to take the biscuit though. I'm fairly confident that RSPB and English, contrary to SS's suggestions, are fully aware of the fundamental principals of population dynamics (e.g that a lowering in prey numbers due to predation is offset by lower rates of mortality as a result of reduced competition).</blockquote>