Duck just threw up these worms?!

[bstan723]

My one duck has just threw up these worms. This is the second day he has been throwing up and shaking his head rapidly, but the first I found worms. What types of worms are these? I have already started him and my other 2 ducks on dewormer. Thanks!

 

[Yah]

Feed some Cayenne that will burn the worms away ! Maybe some lavender to relax the duck a bit .

 

[Miss Lydia]

I have no idea I have never heard of ducks throwing up worms. What wormer are you using?
@casportpony have you ever seen a duck throw up worms.