couple of years ago after a touch & go in a Grob at Barton, I disturbed a flock of pigeons who were feasting on the re-seeded airfield. Got 2 or 3 of them in the prop and had to fly a tight circuit whilst enjoying the smell of roast pigeon / scorched feathers wafting through the air vents...
The airfield fire truck was often pressed into action as a bird-scarer, but apparently the pigeons in question were not scared of it!