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Message: <blockquote data-quote="PaulD" data-source="post: 1709261" data-attributes="member: 11840">Sorry that's putting the cart before the horse! The first step is to consider how they got here. If they arrived naturally then there is no need to worry further because they are a natural part of our avifauna. However the available evidence clearly indicates that the UK population is due to escapes, deliberate releases and their offspring (see the BB paper referred to by Steve Dudley).</blockquote>