I just went to feed them for the night & saw that! All my birds have been in their coop (it's good size & has a kiddie pool for my duck to use) b/c when I went to let them out this morning I saw a bobcat in the woods about 50yds from the edge of the chicken yard so I wasn't taking any chances letting them out. I was hoping to shoot the bob but ran off as soon as it saw me lining up the shot w/ my .270
It's kindof hard to see from the picture and I have zero experience with this... but apparently drakes can have prolapsed penises. Maybe these threads will help you?