Do you happen to have Bill's number?
T. O'Heir,
Yep. It's the tree rats. For some reason they love to chew the bark off of Camphor Trees. When we first moved here, the wife and I would sit in the backyard and watch them doing it. Thought it was odd but cute until massive limbs got chewed all the way around and subsequently died. Bad news...especially here where we get the annual joy of Tropical Storms and Hurricanes.
The only semi-sure way I've found to keep them out of the bulbs is to bury a chicken wire barrier a couple of inches above the bulbs. It allows the growth to get through the mesh and keeps the rats from getting to the bulb itself. Most of the time anyway. They can be downright tenacious.
Man! I always thought they were vegetarians.
That's freaking creepy!