I have 79 (and counting) Muscovy Ducklings in my backyard. The oldest born on 15 April, the youngest born today. Is there a benefit to tagging them via ankle/number if my goal is to give them to folks who won't eat them? I can't sex them yet as they are too immature, but it's still possible for another week or so to tag them by birth date. Too much longer and they'll start to blend in. Just curious what folks opinions are.