We didn't raise the testosterone birds to the point of lay, or mature feather... so I don't know about extended period sexual characteristics.
I do know that pullets and cockerals showed SIGNIFICANT comb and wattle development, acted more rooish including most of them crowing.
Injected birds all more rooish and more developed and more aggressive next to impossible to tell the sexes apart.
Painted on birds next, and almost impossible to tell apart
Fed birds - third and much milder.
Control were as normal as cornish x get, lol.
It was interesting and I wouldn't mind having read the results of the pee hormone experiment, especially if they did run long term results... sigh you miss all the good stuff.