Pekin Duck Issue

[smgustaf]

I have a Pekin Drake that is about 3 years old (his name is Marshmallow). He has been on Niacin supplementation since he was a duckling and has done fine since then until now. Now suddenly he has been pushing his beak into the ground and holds it there. He is still eating and drinking but not grooming as well as before and can not wander as far as the rest of the flock when they are free ranging during the day. Curious if anyone is familiar with an issue like this. I tried to upload a video but it wouldn’t let me so here is a picture of what he is doing. The issue I am describing (and pictured) is not normal foraging behavior or anything as I have had ducks for about 5 years and I am familiar with those behaviors. He just presses his beak down to the ground tilting his body back and holds it there. I would say he does this about a quarter of the time in his day.
Thank you so much for your time.

 

[oldhenlikesdogs]

Does he have any hens? He almost looks like he could be trying to mate without a mate.

 

[Jenbirdee]

What does his poop look like?

 

[Goosebaby]

How we get around the video issue is by posting to YouTube, Vimeo, instagram, or another external site and then just link back to it.