Post #40 above led me to a very interesting publication, that I wish I had seen much earlier.
http://animalsciences.missouri.edu/reprod/ReproTech/Feathersex/sld001.htm was the best explanation.
My wife and I chose chicks with larger wing feathers and larger tail tufts, noticeably horizontal...
Yes, I think that is a roo, as well.
I just hatched 38 eggs from my RIR. I waited to distribute them for 5 days after hatching (hatch April 7).
We'll know for sure in a few weeks, but I am fairly certain I picked 11 hens for myself at 5 days. The differences I noted while raising them last...
I bought sexed pullets - 11 lived past the first week; I lost one.
One is turning out to be a rooster, I think.
I did not notice anything at purchase, but he did weigh the most of any bird.
Since then, he has either been top weight or second.
The differences from the other started to be very...