yeye5
Songster
Age of a bird has a lot to do with evaluating gender. You look for different things, at different stages of development.
Might you--or anyone else--have pics of pullets vs cockerels of various breeds?
I'd love to see the comparison so I have a better visual reference.
For example, you told me Bert is a cockerel. IF Bert had a barred rock sister, I'd be able to compare comb colors, feather shapes etc.
Since of course I don't have that many chickens I don't have male and female of any one breed.