These small birds are more heat-tolerant than you believe. Overall, most hummingbirds dwell in the tropics. John says hummers can get heat exhaustion, but they'll seek refuge like humans.
John says hummingbirds can handle heat with shelter and moisture. Some species, like the Southwest Costa's hummingbird, are heat-adapted. He also says hummingbirds have low feather density around their legs, eyes, and wing bases.
How Often Should Summer Hummingbird Food Be Changed? Hot weather requires extra attention to hummingbird feeders. Sugar water degrades faster in heat. Hummingbird feeders must remember when they replaced the nectar.
Install Water Features Hummingbirds like bird baths. John suggests putting a mister to your yard to give them a refreshing shower.
“You can even ‘train’ hummingbirds to anticipate a good mist by using a mister with a timer that turns on the mist daily,” John says.