It was worker brood. Nice clean light colored cappings, so must have been recently capped. Josh thought he saw a loaded queen cup in the bottom box during the previous inspection which was the reason for this weeks "deep" inspection of that hive. The only hives that received "deep" inspections this week were hives we thought might have a problem. The rest we just checked supers and added as needed.
No queen cups or queen cells were found in the deeps, aside from a couple old queen cells that had been opened from the side.
The queen excluder seemed intact so how did the second queen get up there? If she left the hive to mate through the bottom entrance it seems she would have come back to, and entered, the hive through that same bottom entrance. Correct?
I'd need to check my notes but I think we added the excluders and supers on 5/7/18 but it may have been the week earier.
Maybe there's only one queen and she's dinky, but if so I'll take more like her. She, or they, are laying up a storm and that hive will need another super, at least, next week. I misspoke in the original post. This hive has 2 supers on it, one drawn and one undrawn. They have filled the drawn super with honey, except where the brood is, and are working on the undrawn super. Ted