A bazillion is right.

There's a seasonal stream behind the coop, but I doubt it'll last long in 90* weather. There's also a
real stream, but them finding that would result in more deaths than the heat. It's pretty fast. One area they spend time in is old pine growth mixed with a young stand that gives nice and even cover. Still, shade only goes so far to cut down on the temperature.
I'm also a tad worried about the goats. Their enclosure isn't ventilated for this weather. Maybe I'll put them in the chicken run (shaded during some times of day) since the chooks aren't using it.
So I guess the battle plan at this point is ample water, shade, pens moved to shady areas, and monitoring them carefully. If I see any in distress I'll bring them into the basement, which is 60* year round. I'm not sure if I have a sprinkler, and I don't feel like buying one, but I'll rummage through the shed/basement and see if there's one I've forgotten about.
How do you people deal with this on a regular basis??