Re: Upper Entrance
I've mentioned this before but I'll post here as well. A few years ago I made a bunch of ventilation inner covers. Basically a thick shim with screened holes all around except that the shim has a floor making it a tall, inner cover with holes. It also has a notch in front the same as many standard inner covers. On every hive that has these ventilating inner covers the bees end up preferring the top entrance. They still use the bottom entrance but a few minutes of observation will lead you to believe that most bees choose to enter the hive using the top entrance. I often think (but I'm not sure) that during a nectar flow the bees carrying nectar instead of pollen tend to be the ones that use the top entrance. It seems that most of the pollen goes in the bottom. Again, I'm not sure but that's what I'm seeing.
"My wife always wanted girls. Just not thousands and thousands of them......"