Yes your correct the males are white, and females are grey with some white but I have heard that the males usually have some small grey spots like under the wings and he doesn’t s have a single spot of grey, can a pilgrim gander be solid white?
i have a male pilgrim goose gander, I got him as a gosling and was sold to me as a pilgrim but he is grown up and has blue eyes and no grey spots at all so do pilgrims have to have grey or can they be solid white or is it a embden gander?