duck foot problem

[Aliamelody]

my duck was ok yesterday
but today when i went to feed him , i saw he couldnt set his foot on floor
he move his feet
there is no scar or swelling
i dont know whats the problem
please help!

 

[Shadowfire]

Are there any lumps or blackish brown plugs on the bottom?

 

[Eggcessive]

my duck was ok yesterday
but today when i went to feed him , i saw he couldnt set his foot on floor
he move his feet
there is no scar or swelling
i dont know whats the problem
please help!

Can you start some poultry vitamins or give 1/4 tablet of vitamin B complex crushed over some food or a treat? Ducks have a tendency to need more niacin (vitamin B3) in their diets. It would be good to see his footpad in case of bumblefoot. Look for swelling or bruising in case he injured it.