This time of year, yellow jackets are abundant in my area. I was reminded by Dawg about children's Benadryl recently. So if yellow jacket ground nests are around your property, keep some on hand. Eliminate nests with an effective pesticide if you find them. They will attack and sting with a nasty venom that can swell the tongue and trachea no matter where the bird is stung on the head. .5 cc of children's Benadryl, given orally with a syringe, minus the needle, for a mature LF hen can prevent death, especially in hot weather when birds are already a bit stressed. It is recommended not to give more than that amount, or give it more than once in a 24 hour period. I have a hen recovering now, and was glad my friend gave me a reminder.