When do duck produce the oil to help swim?

[NineChickens]

When do ducklings produce the oil to help swim? When can they go in deeper water instead of just wading around in it? Do they need their feathers first?

 

[Jayecookie]

1 month

 

[Jayecookie]

Watch them if under one month cause they can get tired and drown. And dry them off after so they aren’t cold since their feathers aren’t waterproof

 

[chickens really]

Hello..Ducklings can swim after 2 days old. Water stimulates the oil gland to produce oil..
I start them off in shallow water and then deep water so they can dive around. Never leave them alone in deep water. They can drown if they tire out.