Sitting on the terrace last night, chilling with a glass or 2. suddenly my ankles got bitten, through my socks. Sodding flies. We decided to put up an A4 sized fly paper (we do this every year). i was horrified this morning when we discovered one of 'our' swallows stuck to it. (we have 5 nests above the terrace, 2 had been used by sparrows, 3 by swallows). I managed to free the bird's wings, put it on the table and it flew off. I suspect its favourite colour is not yellow. We have taken it down until the 'nesting season is over. the bird was really calm, they do get used to humans.