Ma'am, there is a massive Tulip tree right above the Aviary that provides shade at different levels throughout the day. We have another 100 sq. ft. attached run that is 2/3 to 3/4 shaded all day. Plus they like to rest in the shaded coop which has a fan running during the day. They have lots of roosting bars and tunnels to rest in the shade as well. We put this tarp up 
on the day that is got too hot. Plus they have cold drinking water, kiddie pools to wade in, and frozen treats. They are very happy chickens, and even get the luxury of coming inside in the AC occasionally. 
You are welcome to go back and read previous posts where we have been discussing these things.
The Coop & Run:
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The Run:
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The Tunnel that connects the Run (100+ sq. ft.) to the Aviary (300+ sq. ft.):
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The Coop (There is a big window I open wide for air in the Summer.):
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The Aviary:
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The Tulip Tree (plus an Eclipse):
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You can see the tree trunk right behind Molly here:
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LaFleche was super kind and helped us see the importance of putting things for the chickens to do in the Aviary!