Hi. I just came in from outside and happened to walk past my hives. It's about 40 degress outside here in Southwestern PA and some of my bees were out on what I assume to be cleansing flights. However, after watching them for about 10-15 minutes I noticed that about 75% of the bees (maybe more) that were leaving the hives were crash landing on the snow sometimes rolling on their backs and staying there.
Is this normal behavior. I have 5 hive and 2 of them were active in this manner with about 50 + bees dead outside in the snow and then about 1 or 2 exiting in this manner every minute and either landing in the snow as I stated above or flying around. Didn't see any returning to the hive though.