In last week's drenching rains, it was interesting to watch how different birds handle the downpour. Some birds look for shelter. American Goldfinches on a feeder will tuck under a weather guard to stay as dry as they can. I've seen Rose-breasted Grosbeaks and Black-capped Chickadees cling to a pole under a hopper-type feeder for protection from the rain. And many times throughout the day, this male Ruby-throated Hummingbird parked himself on a protected feeder for the duration of the shower.
Mourning Doves will go out in a shower, and the rain just seems to bead up on their back.
Then there's birds like woodpeckers, who seem to tolerate getting wet in these warm-weather showers. But in my yard, the wettest birds are the Blue Jays. They don't let no stinkin' rain stop them from gorging themselves at the feeders!! I'm always surprised how drenched they get. But within minutes after the shower ends, they're already starting to dry out.