Slugs, birds (it is nest building time). I have 2 wrens that are determined to line their nest with wife's petunias.

Dave

If the lilies look like they've been chomped from the top (esp. the flower buds just chopped off and disappeared) I'd suspect deer. I'm not sure about calla, but they love Asiatic lilies.

Strawbery leaves? Again, if they're totally gone not just holey, it might be deer. Though if you've got a lot of grass around I don't know. But deer did eat my strawberry leaves late last fall before I had mulched. I'd assume that they'd have plenty else to eat in the spring though since they haven't touched mine since I took the winter pine bough covering off.