Mosquito control.
Here's something creative.
I'm in the subtropics. It's hot and humid.
We have a lot of mosquitoes despite my local control measures.
After some careful research, I attached an old but reliable fan on the wall running on a wifi plug, so I can set the times.
Set to lowest speed, it blows a gentle current of air at about 1- 1.5m/s along the roost, enough to mess up mosquito flight.
Girls are ok with it. It's bloody hot tonight btw. You can see one holding her wings out to cool down.
*Yeah, can't really seal the coop.