Really I don't know that much about other domestic ducks like they mate year round? I thought they took off winter just like the Scovy's do. I don't know if I could deal with that year round ugh. Good for Tevye to take up for himself. No one will stand up to my one drake but my geese. I'm afraid you have many years before you see a slow down or mellow out. I have a almost 11 yr old drake who can barely walk and last year I saw him in the pool with one of his girls not sure if anything became of it but he had the will just maybe not the way.