I have come to the conclusion that our ducks have a natural affinity for black berry bushes. Not a good thing, since an incident with a blackberry is what started our recent romp with bumblefoot. We have blackberries everywhere on our 5 acres. The ducks just seem to naturally gravitate towards them - oblivious to stickers and getting caught on them. I chase them to other parts of the yard and they find another patch. About to resort to not letting them free range any longer as it is the only way to protect them from themselves. I assuming there must be good bugs, slugs, grubs under the stickery bushes (particularly in winter when they are not finding much elsewhere) that keep them going back. They seem oblivious to the fact that they keep getting hung up on the stickers. They are so good at avoiding other things they are leery about (food), but clueless about blackberries. Anyone have a similar experience?