Whos eating my garlic

Someone else had that same problem recently, can't remember who now, but hers were rabbits (telltale droppings). But mice and pigeons will happily oblige. Only way is to net them with either a hoop affair or just bend some wire mesh over the area so the garlic shoots can get through later but high enough that the pests can't keep feasting. The shoots should still keep coming out though you may not have as many cloves within the head as originally growing.

No rabbits round here - they've all been eaten 

I've dropped some netting over them ... if they still get eaten it must be mice, I might plant some peas out to distract them.

The leaves on mine were eaten by rabbits when we had the snow they have grown back now and they haven't touched them since.