Urg! And I'm sweatin' through me under drawers up here at 88*(but feels like 93*, they say...and they ain't lyin'). No AC here, so it's fans and working when it's cool if you can, stopping when you are about to drown in your own sweat and sitting in front of the fan again.
Good for the...
There are houses in a near town, these houses are side by side...and I mean right smack dab next to one another. One house has 4 owl decoys on their roof to keep the pigeons from perching there. It works! The house next to it has so many pigeons on it, it looks like a day at the pigeon beach...
You can try creating places for your chickens to find shelter from this type of attack. Some folks place pallets or plywood up on cement blocks for a place to duck and cover.
Do you have a roo? If not, this may be a wise investment. A good roo will sound the alarm in time for hens to find...