We have several citrus trees in pots in our yard, as well as several other potted plants. Our ~8 week old chicken loves hopping up on the pots and going from pot to pot. Lately she has started pecking at the young tree leaves. At first I thought she just liked to peck at them, but I noticed she's actually eating the leaves. Is there anyway to prevent this? I'm sure it's not bad for her but it's obviously not helping the trees at all. So far we've only let her have her chicken feed and the occasional mealworm, but would she benefit from having some other kind of leafy green vegetable to pick at rather than our tree leaves?