I have had to spend a small fortune on squirrel proof cages to go on my feeder pole trays. We don't get squirrels but pigeons,doves,jackdaws , rooks and crows by the dozen, Hitchcock's Birds all over again, any food put out is gone in seconds and once the "black mob" arrive every Gull for miles around assumes there must be something for them also.
The cages now mean that the vultures are not beating the small birds to the feed. I am still getting through 8kilos + of mixed seed per week