brood survive

Several weeks ago, PDX had some 60+ degree days. I looked into my HTBH and found combs of honey with ... dead uncapped larvae underneath. I saw nothing to indicate disease, no ropyness or sign of waxmoth. Did the hive just stop caring for the brood due to weather? lack of pollen? My books...

Thanks in advance for your help. On Sat 5-7-11, I did a hive extract out of a friends garage. The comb had a large amount of brood at various stages. I put the comb in three nucs: 1)one nuc was left behind in the garage to attract the remaining bees 2) in one nuc I put bees and comb 3) the...