I also assumed my female was male and have kept calling my budgies 'The Boys' but one is a girl. Where one goes one follows.
I know this thread is truly awesome, but their appear to be so many exceptions to that rule of "Blue is a boy and pink is a girl" that I have almost given up. I also have selected at least two birds thinking pink meant girl.. nope!
Apparently... Brown (or white, or white around the nostrils, or light blue, or pink) = GIRL.. Blue (like deep, vibrant blue/purple) means BOY..
However, "Baby boys wear pink"...........
Bulbous and round = boy
dark brown, like a chocolate color = supposed to be a girl (*see pic)
deep hollow brown, almost black = mature, old, broody female.
Here is a bird I have that is a female, and I am not sure the pet store knew they had a "broody" bird (still not sure what "broody" means.)
*birdie does not know finger. I am holding birdie GENTLY
And here is a BOY that has me guessing because I see "White around the nostrils." (young)