Hello. I have a 2 1/2 year old male Pekin. Late last night, I noticed he has what looks like a lump/abscess underneath his bill. It's where his neck begins. Last night and today he has been acting very lethargic. Usually he's a hyper troublemaker. His quack is normal. I can't see any sort of obstruction, however it's difficult to get a good look. Does anyone have any idea what this might be? I should also mention that Melvin is in indoor duck. So he did not get into anything outdoors.