I agree with Lin, it looks like spent flowers have fallen off, as in this picture:
One thing to be careful of when working around daylilies that have scapes is that the buds can also be knocked off very easily.
If it was a deer, more would have been eaten. I can't imagine a bunny reaching up that high.
Strange curve on that last scape!
Edit: Just realized that the AHS has a picture also in the Daylily Dictionary:
http://www.daylilies.org/ahs_d...
