Flying into the Wind

Wind gusts reached 50 mph yesterday and carried dried corn leaves and tree leaves across fields that many farmers were harvesting. Firefighters were busy fighting fires that lapped up acres of dried corn and beans. I, though, was watching the birds trying to take flight. Do birds have "wind days" like people have "snow days?" Do they just decide that traveling isn't worth the bother? At what wind speed do birds just give up and decide not to fly into the wind? And, do adult birds welcome the windy days with glee and take their adolescent offspring out for flying lessons?