I went out on to my beeyard this fine warm day (60 F) in Cheyenne, Wyoming. I was just popping covers, looking and making sure all was well. The first three hive have large healthy clusters, and are good and heavy. I proceeded to the fourth hive, took off the cover, and I noticed that there were no bees at the top, there was no noticeable heat (like normal), and no "zzzzzz"ing. I kinda frowned, and then decided to take the hive apart. Sure enough, dead, starvation by appearance. Bee butts sticking out of cells, as well as the other dead bees "clustering" around. I am some what confused, since this hive weighs 130 pounds, nearly full of honey. The two outer frames on each side of the first (lower) hive body were full of honey. The middle six frames had the dead cluster and were totally empty of honey. All ten frames in the upper hive body were full of honey. Note: There wasn't much pollen anywhere. Well here are some photos:
Looking down the frames through the inner cover:
The frames in the upper story look like this (no bees at all in the upper box):
Looking at the lower story:
Outer frame from lower box:
Next four pictures are from the middle of the broodnest/cluster:
The bottom board (screened):
Do y'all agree that this was starvation? If not, what else could it be? What should I have done to prevent this? Thanks in advance for your input!