yellow jacket

Few hours ago I was outside with my ducks when all of a sudden one started whipping her head around really aggressively and I noticed something in her mouth. I was to busy checking on her I didn’t pay much attention to it but I think I saw yellow or orange and I’m wondering if it was a yellow...

Can anyone tell me what I should do for a duck that has been stung by yellow jackets? I am not sure how many times he was stung. I was stung once before realizing that I was on top of a nest. Stevie, the little darling, was sticking close to me waiting for another worm or other goody. He was...