Thanks all for replies! Bees were not dead head in like they would from starvation. There were significant remains of all stages of development in the cells. Wish I had a photo of the brood nest, but by then my gloves were covered in honey and I was 15? up on a ladder. There are actually a good amount of bottle brush trees in that area. There are bottle brush trees everywhere around here as a matter of fact. I have not seen the nectar isolated like that (to my knowledge), but maybe that explains it. If it had been a healthy hive I wouldn?t have questioned it, but with all the evidence of the old occupants meeting an untimely death I couldn?t help but question how dark it was compared to what else I?ve seen in the area.