sam wrote:
Every year I have planted onion sets in my modest vegetable plot,
and
before they have had time to get established several of them are
lifted, by birds (presumably).The sets are left lying on the
ground.Why do birds do this ? This year,for the first time, I have
covered the sets with fleece, which will remain place until the
onions are well established; but I would still like to know the
reason for this strange behaviour.

Don't foraging birds look under anything they can move, not just
onion sets?

--
Mike.