Asian Pear Mystery

The peaches were great this year. Then the drought started to take hold in the valley. Fortunately, I had installed a drip irrigation system for the garden so the veggies had a good year (except for the broccoli). I was expecting a bumper crop from  the three Asian pear trees. But when I returned from a two day minication in the Blue Ridge, I found the trees were stripped bare. No dropped fruit under the trees and no half eaten fruits that the squirrels usually leave on the ground, and no fruit to dehydrate.