Hello~ I just recently got back from a flock swap and brought home 3 Geese with me, The owner said that the gray one is a goose and that the biggest one is a Gander, And he says he thinks the smaller white one is a Gander as well, But i'm not entirely sure. Can anyone help me out? The African and the larger white one (Not sure what breed) are 3 years old and the smaller white is is just about a year old.. Any guesses on Gender?