It gets so hot in the barn in the afternoon and evening with the sun beating down on the west and north sides - I was thinking a shade cloth/screens would help. But the barn is 60’

, the Rooster Run has really good tree cover so the chooks hang out there during the day, but again in the evening it’s really warm in the Hen House.
I assume I can get shade screens on Amazon?
I searched on
Amazon, and found out cheaper direct from the source. I have purchased from 2 different places.
This one was less expensive
than this site - and I have been happy with the shade tarps from both places. Pay attention to the listed percent shade for each one. They run anywhere from 40% shade to 90% shade. Most common are 70% & 80%. You can look other places, too - they do make white shade tarps, also - but I have found the sites they are on to be very expensive. However, the second site I posted has light tan tarps. I somehow think that a light shade tarp would be more effective as it would also reflect as opposed to absorb light, as well as blocking it from going through, but I only have black, so can't do a 'side-by-side' comparison.
I would think that if you put some eye bolts into the outside of the barn at about 12-15' up ( use a
tall step ladder - whatever you can reach comfortably from that), then use carabiner's to attach the top of the tarp to the eye bolts...and angle the tarp out and away from the barn (so, essentially forming a right triangle with the tarp as the hypotenuse). That should help significantly! Just be sure to measure carefully so that the eyebolts line up with the tarp grommets.
EDIT to add: If you can plant some sort of vine on the south side of the barn, that would help significantly. If you don't want it growing directly on the barn, create a trellis about a foot or so out from the barn.
I realize when I made the suggestion of the hypotenuse tarp I don't know if that is the barn door side or not....but you could still possibly do that for a portion of the length of the barn, even if it is. ANYthing you do will help some - the more you are able to do, the more it will help.