So what did I do next? I did what any reasonable person would. I pulled him out from the mud.
I expected to be showered with gratitude and thanks, but instead I got a look of horror. His wide eyes danced all around, the lower part of his beak quivered. I think he thought I was going to eat him. So I tried to clean him up quick and I let him go.
A few days later I went to investigate this treacherous mud and guess what I found? Concrete. Yep, he must have fallen asleep while it was still moist, and then it thickened around him.
Luckily for him, I found him before it dried completely. Otherwise Bud the Duck would always be stuck.