Signs of life

Checked out the langstroth hives at the Haddock's place today. There were actually 2 girls out flying around Hive3 and plenty of brown marks on the hive and in the snow. The temperature is in the 40's.
The other hives (Hive1 and Hive2) showed no activity whatsoever. Hive died last year after some really bad nosema and several attempts at growing a new queen. Hive2 must have gone over the winter. I opened up the top and there were bees everywhere - just dead. Didn't pull out any frames to inspect.