Was following your returns during the season Derek and thought that was the case. Falcon Deterrent Spray In Pink â—¦A pink aerosol spray that helps to cut down the number of falcon attacks. â—¦Hawks find the pink circular spots unnatural and confusing. â—¦Use in conjunction with your existing falcon deterrents. â—¦Extensively used in Germany to help deter raptor strikes. â—¦Spray a defensive mark on the outside and on the inside of the wing, with some fanciers also spraying a dot on the tail. â—¦Best to spray using a circular template (approx 5cm diameter) from a distance of 10-15cm from the pigeon. â—¦Wear gloves and overalls, as the spray can stain. â—¦After spraying it is important that the pigeon does not come into contact with other birds, as the spray needs a little time to dry, this depends on the ambient temperature. â—¦The colour lasts for approx 6 months. â—¦Spray approx 1 in 10 birds. â—¦Composite, colouring, adhesive agent, Isopropanol, â—¦Expanding agent, propan/butan. â—¦Shake well before use. â—¦Not available for overseas shipping. Remember reading a few years ago that the white rump on feral doos also helped and the thought was, I think, that those without would possibly be wiped out through natural selection. Not sure if it holds true.