Like other geese with traits such as unusual markings Boxelder has a more prominent trait on one side of his face than the other. Boxelder has a few siblings and one of them - Zelkova - has a white spot of feathers under one of her eyes. I believe this could possibly get more obvious as she matures.
I will keep an eye on these two and see what happens next. Since Boxelder and Zelkova both have this trait it seems genetic. I have looked at pictures of their parents and their parents' parents and have seen no signs of the trait which Boxelder has but it could be even further back. Luckily, I can further evidence of this being a possible genetic trait with the help of their two younger siblings.
my name is Emily
I have twenty-eight geese. I hatch a bunch of goslings because I want a lot of people to have geese. I do not see them everywhere but I want to! The goslings are the sweetest baby birds I know! The adult males are proud and can be cranky but have their sweet moments while the females are shy and sweet all at the same time.