Wow. I've heard about the changing weather patterns over the few years on the west coast. The Southeast has been getting record highs lately too but our summers are so humid that it doesn't hurt plant life like it does out west. My Ameraucana stock was bred about two hours away by Susan Mouw so I like to think they are more tolerant of the local climate than birds bred elsewhere would be.
We had consistent 100+ temps here this whole last summer... adding electrolytes and vites did wonders... the only issues we had was compounded by a high wormload that we didn't catch til we lost a couple... otherwise ours did fine in the heat...