Sounds to me like the NIMBYs are rounding up every "expert" they can to curtail CVT OPs. Of course bird strikes can be dangerous, but if they were so common, why arent aircraft falling out of the skies around LHR every day, LHR has the Thames and massive wetlands / lakes to the east. Not to mention all the swans in the royal parks, or have the asylum seekers finished all those off !!