If you have pesky grey squirrels that are always eating the bird food, or flocks of pigeons crowding out smaller song birds, then this metal feeding haven is a simple and effective solution. It creates a barrier, with gaps in the wire large enough for small birds to get through, but not large birds and grey squirrels. The feeding haven can be placed on the ground, or on a large bird table.Dimensions: L50 x W50 x H24.5