I've seen a couple comments lately that make me wonder. Someone commented on a site that they don't think feral hives last more than a year and that bee trees that seem years old are just being re-used by other swarms.
Could this be a factor on CCD? Have we finally bred a bee so dependant on manipulation that it cannot survive more than a few weeks or months without us? That are so used to being disturbed and robbed that they are lost if left alone?
My feral hives are more than a year old. I have removed feral hives that are many years old.