I have a pair of buff geese. The male was sexed at hatch, the other I'm 75% sure is female, from vent sexing her at one month old. They are 10 months old. Today the female was mounting a female duck, who was squatting for her. It was the first time I had seen any sexual behavior from either of them. My question is, do female geese mount other birds? Or do I have two ganders? Another question, while I'm here, is about my female. She (or he, I guess) had been pulling or shedding feathers from the very front of her breast. But no other signs of nesting, and no eggs. Preparing for brooding, or just a weird thing? Thanks!