I have googled how to determine male or female greylag goose, but everything just seems to contradict each other. It says that males are typically larger, louder, and more aggressive. The females are shy, smaller, and have noticeable egg pouches under their bellies, but i have four geese and the larger one has a sack/pouch thing and is very shy, skittish and pretty quiet. and the others are all smaller, but the smallest, is very shy and skittish but doesn't have the pouch, and the other two are both loud, aggressive, especially with our poor rooster they have pulled out some of his feathers, the one gets on one of my ducks, but only occasionally a goose to mate, but it doesn't look like a male, or match the description of one so I'm really confused. can anyone help?