Having live plants/soil seems to help so much with the heat—all that evaporating water is like a natural mister. Please post pics of your chicks when you finally let them out—are they all different colors like the older ones?
I made a couple "eggs" on Saturday. They don't look quite right, but I hope it's enough to convince the birds.
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My tiny hen, Little Lady, got defensive over an irregularly-shaped clump of dirt yesterday and pecked my hand when I tried to move her. The clod was warm when she finally moved, like she'd been sitting on it a while. Set it aside and when I came back she'd moved it under he again. I hope they fine my fakes as attractive as dirt
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That's very good! I like the polka dot nails too

Have you tried them out yet? What do the think?
I took snaps in the aviary this morning so I'll be updating soon. The newbies are just wild types, no colors this time.