The RSPB says we shouldn't offer whole peanuts in an open feeder, because small birds may try to swallow them whole and choke. So, how can I make peanuts available to birds that can't cling on to the recommended metal mesh feeders? Does anyone supply good quality broken peanuts? I'm currently buying whole peanuts and laboriously crushing them by hand, a few at a time in a pestle and mortar. Is there any alternative?