I'm wondering something- it's now usually only in the mid to high 40'sF daytime highs (with a few scattered great days in the 50's still). But here';s my thought on my hive which has two older semi-neglected deeps and new lids and bottom boards- Since the two big boxes have been separated twice these past two weeks, during the consolidation and moving of the hive to my house, and also the top lids and the bottom board stuff was replaced...that meant the propolis seals everywhere were broken. The two deeps had LOTS of lumpy propolis accumulation on both their upper and lower edge rims. I scraped lots of the hard lumps off the top edges when putting things back together, but I couldn't scrape the bottom edges- too heavy to manuever and scrape. Because the propolis lumps are hard in this cold weather, they created very thin gaps when the deeps were stacked again in their new sequence. The end result is that though the bottom board, two deeps, and upper lids look like they are nicely sitting flush on each other, there is a tiny gap you can see light through on both the tops and bottoms of the two deeps in the hive, and in between the two deeps- where the rough box edges don't quite seal all the way. Should I worry about this as a source of cold draft getting into the hive during our frigid upcoming winter? My question is: Are the bees able to get/make propolis in this now cold weather to seal the gaps up themselves from the inside of the hive this late in the season when it's cold in the 40'sF? Or should I maybe wrap the back and sides of the hive with something to reduce the effect of cold winter wind possibly getting in those thin gaps?