I was wondering about fertility. Did you notice it drop after 5 years? What was your indicator? Meat is the goal for ours. And being from mixed enterprise farming family, completely understand the culling of something not producing anymore, as sad as it is you can only feed so many mouths
I've never tried hatching any eggs from birds that are 5 years old, so I can't say, although I did read that drakes are only very fertile for 2 years, and hens for 3 years, and afterwards you are supposed to cull them. I don't always follow the rules.

My breeder ducks are so friendly and cute, sometimes it's
really hard to butcher them. My ducks are like my mascots, literally! So, ya know, its really hard to say goodbye to them.
I actually have this one drake named Cocoa, and I've really been starting to think that I shouldn't butcher him, and I should just keep him until he dies on his own. He is sooooooo cute! Not only that, but I notice that he also keeps the other ducks in order. Just a few months ago, I had him and his 2 hens separate from the other Muscovies.
As soon as I separated him from the other ducks, the other ducks started misbehaving, and they didn't want to go in they're coop at night! He really is a good duck, I just can't see myself letting him go.
Besides if he keeps the other ducks in order, I think that's a perfectly good enough reason to keep him around.
He is also a good daddy. I can put him in with the ducklings the day they hatch, and he won't even try to kill them! He actually takes good care of them.
He's pretty perfect all the way around! A perfectly good Muscovy! I love you Cocoa!
