Awesome Nest Box Tony! 
Looks like I will be needing to expand my nest boxes, have 4, and there is always a line or someone fussin because they have to GO! 
Have you planned ahead when one of your hens goes broody, do you have a separate area set aside for her?
Just remember when the summer heat hit, start freezing water bottles (1 gal) the night before, and in the morning set them in a container of water. I use a plastic oil change pan, big enough to hold the frozen water bottle, and enough room for the chickens to get a nice cool drink. I also drilled 4 tiny holes on the sides 1/2 from the bottom of the gray plastic container, put the frozen bottle inside, and poured cool water to the top, then put on the lid. The water trickles out the hole & into the oil pan. We had 110 deg or higher last summer in Texas. I was misting them down with water 3 - 4 times a day. Chickens also like frozen watermelon.
.... I am absolutely LOVING this 
