I normally have to protect seeds, but not seedlings. Thus year's been an exception, and the sky rats have been chewing on them something awful. I've got netting wrapped round the wigwams for the time being, more to scare them off for a week or so than anything. Once they move on to something else, I'm hoping they won't come back. The peas soon grow far enough for the juicy shoots to be out of reach, and then they should be safe till the peas are in the pod. I'll inevitably lose some then, but it's a bit difficult to net six foot peas!