Today I noticed a large number of dead and dying bees around one of my two hives (I hived the bees on the 12th). I would guess 100 to 200 bees. Many, maybe 35% had lots of pollen as if they had been foraging, made it back to the hive area but not up to the hive. Most were still alive, just not able to fly. It has been cold here (highs in the 50s and rainy) but the bees have been actively foraging. Is this just package bees getting old? Or is it the cold weather? Both my inspections have looked good with lots of capped brood and queen sightings each time. Pollen was varried colors as the bees must have been foraging in different area so I would think its not poisoning.