Pest proof birdfeeder.
At the garden centre, a 'pest proof' feeder. The key feature is that the perches are mounted on a sliding panel which is sprung. When a light bird lands it can feed in the normal way but anything heavy like a rook would cause the panel to come down and cover the feeding hole. These cost a whopping £25 so I would like to know if anyone has tried them.
Near my garden there is a rookery. These birds drive away all the smaller birds and take the food. They are very intelligent and can 'cut' the strings or even break apart weaker feeders so I am reluctant to pay so much if they don't stand up to a determined attack. Any comments would be gratefully received.