Doves of Piece?

Relevations that 'doves of peace' released by the Pope and his followers in ceremonies at the Vatican are frequently attacked by crows or 'seagulls' (http://www.bbc.co.uk/news/blogs-magazine-monitor-25910398) should come as no surprise. It is likely that the attackers are trying to get the doves to regurgitate grain on which they might have been fed rather than to actually kill them. Releasing, however, food items in a predictable location and at a predictable time is likely to generate this behaviour.