Gender & breed of geese

[Mrs.Johnson]

Good morning, anyway you guys can tell gender of the 3 geese in this picture? I've tried looking it up myself... there is alot of white geese but I'm stuck between two different breeds. I think I have two females and 1 gander. The one that is taller and more stout then the other 2 is the one I think is a gander

 

[FoodFreedomNow]

How old are they? I'm guessing the white geese may be white Chinese because I think I see the beginnings of knobs on their bills. I've raised white Chinese and won't try to visually sex them - it is possible to vent sex them if you really want to know now, or you can wait until they're older and you see unmistakable signs, like breeding.

Do you know the breed of the darker gosling? It looks to me like it could be a brown Chinese or maybe an African.

 

[Mrs.Johnson]

I have idea what breed it could be my husband brought them home from Rural King but didn't ask what breed or even take a picture of the sign in the bin... if I had to guess thier ages I'd say a little over 3 months old.