How do you sex a chicken?

[Sisters Farms]

I noticed the tail development on my Orps was a pretty good indicator of which were which. Those with stubby, square tails all turned out to be cockerels. Those with pointed, fluffy tails ended up being pullets. Tail structure was easy to note by 4 weeks, but it took until around 8-10 weeks for me to be sure the pattern meant something. By 10 weeks, wattle development was REALLY clear.

. Here's their tails

 

[HighStreetCoop]

. Here's their tails

Can't tell about the one on the top, but I'd guess cockerel for the bottom one based on the stubby tail.

 

[saltandpepper2]

I was going to say from head shots that the darker one looked like a roo, and wasn't quite sure about the lighter one.

 

[Wyandottes7]

. Here's their tails

The one on the top of this photo is looking a bit roosterish to me. But, it is too young to be certain.

 

[BantamLover21]

The one on the top of this photo is looking a bit roosterish to me. But, it is too young to be certain.

Agreed.