Welcome!
Your birds are all young, and it's not going well at all! These birds were raised together, and apparently your drake thinks he can breed your pullets. The cockerel can't fix this, especially as he's so young too.
Drakes are NOT meant to mate with hens or pullets, and will damage them, so at least this drake needs to be gone.
Separate digs for the ducks and chickens will be best, ASAP.
Mary
Your birds are all young, and it's not going well at all! These birds were raised together, and apparently your drake thinks he can breed your pullets. The cockerel can't fix this, especially as he's so young too.
Drakes are NOT meant to mate with hens or pullets, and will damage them, so at least this drake needs to be gone.
Separate digs for the ducks and chickens will be best, ASAP.
Mary