Obviously it is important to recognise Safeskys' commercial interest in the subject but there is a valid point here. One serious birdstrike incident which resulted in the airfield operator being found liable could wipe out years of so called savings on the cost of bird control. That is apart from the potential human cost. I have a healthy suspicion of many of the fads associated with this subject but one thing I am certain of is the hazard which birds can present to aircraft. I have seen too many damaged airframes to feel otherwise.