My duckling have been having this issue for a month now. He walks like he has no knees, and his tail are tucked under him like a dog who had done something it should not have done. Every time he tries to go stinky, his tail covers his vent, I think, then he flaps his wings, then sits down like he is tired from all that work. He is always lagging behind everyone. I free range them.
Here is my other normal ducks.
What should I do with him? Cull him? Thanks for any help.
![74819_chickens_012.jpg](https://www.backyardchickens.com/forum/uploads/74819_chickens_012.jpg)
![74819_chickens_007.jpg](https://www.backyardchickens.com/forum/uploads/74819_chickens_007.jpg)
![74819_chickens_013.jpg](https://www.backyardchickens.com/forum/uploads/74819_chickens_013.jpg)
Here is my other normal ducks.
![74819_chickens_016.jpg](https://www.backyardchickens.com/forum/uploads/74819_chickens_016.jpg)
What should I do with him? Cull him? Thanks for any help.