Hi! This is my first muscovy drake and I need some help! He's around 5-6 months old, 4.6kgs and a total grumpy butt! He's a basically a completely white muscovy (except one small black dot on his head!) Over the past week or so we've noticed he's gotten some discolouration in some of the down feathers near his tail, it's turning a yellowy/orange colour. He likes to get messy and rub up against anything rusty, dusty, greasy or muddy in the yard! So we're used to him being a bit dirty, but now it looks like these feathers are growing that colour and like its over some kind of bump... Daddy and I are getting a bit concerned.. And we haven't found a bird vet locally we can take him too... My friend has a muscovy drake older then my Dex, but he doesn't have this problem, so I'm worried it could be something serious He's been getting really violent lately, so I'm thinking he might be in pain from whatever this is and it's giving him a short fuse! It would be much appreciated if anyone had any insite! Please and Thankyou! Here's a couple of photos, let me know if you need a better one, Dex didn't want to keep still and my phone screen recently smashed so I'm not 100% sure how clear it is!