In my experience, hens won’t exhibit ‘crowing’ behavior at that age. I’m not saying they couldn’t, but just in my experience they wouldn’t. Too bad you got a rooster you couldn’t keep.
I just mentioned it to you to make sure your pullet was indeed a roo.
Not sure of the ages of your chickens; you don’t mention it in your post. Sounds like you had no idea you had a male. Be aware that a hen can ‘crow’ if they are the lead female. It also sounds like a choked version of a boy going through puberty.
They don’t do it all the time like a rooster...