Adult Canada Geese lose their flight feathers for several weeks in the summer, often while they’re raising a brood of goslings. Without the ability to fly away from people, and with their young to protect, grounded geese may act especially territorial: birdnote.org/listen/shows/grounded-geese Make sure to give the geese and their goslings some space. An adult’s hiss will let you know you’re getting a little too close for comfort. Canada Goose and goslings © Don DeBold | BirdNote