Originally Posted by PepperM
How can you determine the sex of a duck? I've read things talking about coloring, raspy quacks, etc but my neighbor, who also has ducks, said it's all about the rounded tail feathers. What's the "proper" way?
I have two stinky toddlers (born 4/4), one a bit taller than the other. "He" has a raspy honk already where the other one, "she" is still peepy and quite the talker.
If you've got a "honker", you've got a girl. At only 4 weeks, the other could still turn out to be a girl too. If you don't hear honks/quacks by 7 weeks or so, you've likely got a boy. The voice change is slower and more subtle for boys, I've found.
This is one of my girls as her voice changed over from peeping to quacking so you can see exactly what you're listening for:
I think, unless you're a pro at vent sexing, that voice sexing is the easiest and most reliable way to tell. I watched video after video on how to vent sex and tried it a couple of times and probably fared no better than dumb luck, lol. And the curly tail feather won't come in for months and won't be present when they're molting, so it's a definite sign it's a boy if you see it, but just because you don't doesn't mean it's a girl. However, I can hear a wild mallard quacking as it flies overhead and tell if it's male or female - easy-peasy.