When will my chinese gosling get it's bump?

[chickensducks&agoose]

I got a chinese gosling, (definitely a chinese, since that's all she had), and am hoping it's a girl. It was born June 27 and has no bump... does that scream "GIRL"? or is it still up in the air?

 

[smileysal]

Hmmm I think Jack our Chinese started growing his about 5-6 months, maybe a bit earlier

 

[Goat_Walker]

I have three that were hatched in May - two ganders and one goose. They all are just starting to get small bumps, but nothing truly noticable yet.

 

[shelleyd2008]

I have one african that I'm pretty sure is a gander. He's about 4 1/2 months old and has had a small knob since he was probably 3 months old. But the knob isn't any bigger than it was then.