Birds get revenge by using anti-bird spikes in nests - BBC News
Birds get revenge by using anti-bird spikes in nests - BBC News A report suggests they are using sharp metal deterrents like humans do - to keep pests away.animal intelligenceLINK
Birds get revenge by using anti-bird spikes in nests - BBC News A report suggests they are using sharp metal deterrents like humans do - to keep pests away.animal intelligenceLINK