Had a small cut-out yesterday that appeared to be fine and healthy until I vac'd off the bees.

It appeared that they started to chew the cappings off the brood, but brood looked fine (nice and white and no sign of varroa or foulbrood). I just thought maybe it had gotten chilled as we have had some cool nights. As we dug in deeper, we found the same on all the brood.
The colony had plenty of stored pollen, but little to no nectar/honey. Maybe 10-20 cells scattered across all the comb. There was plenty of eggs and young larvae as well.
Would a starving colony chew out capped larvae? I can understand not having food to feed young larvae, but capped larvae has no food load on the colony.
We did not find the queen as many bes migrated up behind the power panel and had to just suck them out with the vac. I'll be checking them this evening to see if I can find the queen.
Not the greatest picture, but the best I have.

Thoughts??