Re: I would like to hear some pros and cons on the top entrance
Top entrances are great. The drawbacks (or maybe "things to consider") that I've found have been 1) if you use a top feeder, you might need to come up with something else. Even if you arrange an entrance under it, robbing becomes easy (just like a boardman feeder on a traditional entrance). 2) The returning bees get a little confused when you're working the hive and there are lots more bees in the air, whereas with a bottom entrance they just keep doing their thing. It's not really a big deal in my experience. And 3) you need to arrange for the top entrance, either making migratory lids with shims like MB's which work great, or using Imrie shims or whatnot. Whereas most equipment has bottom entrances already prepared. Just an extra step/sawdust day.
An overhang wouldn't hurt anything, but I don't know that it helps either. I don't think much rain comes in, and if it does it goes down the wall and not into the colony.
Bees, brews and fun
in Lyons, CO