Is it possible to 100% define between pullets and roosters at 1 day old?

[clairemcc1]

I have had past experience of hatching 3 successful lots of hen eggs. Possibly I have been unlucky, but the last three times I have ended up with a ratio of around 9:1 (9 roosters and 1 hen). Are there any successful methods to define the roosters from the hens at day or two days old? And what are the chances of these methods being accurate? Any help or advice much appreciated! thanks

 

[RonC]

Some breeds are easy to tell at a very young age, others not. Sex-links and some breeds are different colors or at least some variation at hatching. Usually if you buy sexed chicks you have about a 90% chance of getting what you asked for.

 

[clairemcc1]

Would Light Sussex's be difficult to tell the rooster from hens at day old?

 

[howfunkyisurchicken]

The only way to sex your light sussex at a day old would be to vent sex them. Vent sexing requires a trained eye and a delicarlte hand. Hatcheries employ their own trained vent sexers, and even with all of their experience, they only guarantee that 90% of what they sex will be pullets. There are lots of you tube videos that show what to look for when you're doing the deed. They make vent sexing look very easy, but its really not. Maybe you can get good at it! Good luck!