Assistance please vent sexing

[HollyDuckFarmer]

Hello everyone. Need some advice on vent sexing. I've got several mixes here on the farm, one is 9 wks, the others are 7 wks. Is it too late to vent sex them? One of the 7 wk olds has a distinctive duck quack, the others are really quiet but I would like to be sure because I can keep them as egg producers if they are ducks. I picked up one today and I couldn't even locate the vent! So I need help. Oh yes, since these are mixes, (Pekins, Rouens, Khaki Campbells) Im thinking that i wont be able to wait and rely on the green heads. Many thanks everyone.

 

[CelticOaksFarm]

if you arent experienced and couldnt find the vent today I would say you need to wait for the voice change, coloration difference and drake curls on the males.

 

[4hchickmama]

From everything I've read, you can voice sex pretty reliably by 8-10 weeks...and drake feathers start appearing soon after. Vent sexing is pretty unreliable unless you know what you are doing.

 

[HollyDuckFarmer]

Thanks, will be going with the voices.