Congratulations on adding American Buff geese to your life! I love my pair; they are everything everyone says -- loud, messy, attracted to shiny things they can jiggle, eager to eat everything you don't want them to and much more fond of some folks than others.
They are also extremely easy to care for, and will keep themselves and you amused for hours. While I highly discourage their attraction to my shiny car that they like to "examine" with their bills, I love to watch their sudden "zoomies" where they run down the driveway like little airplanes, take off (just barely) airborne Very Briefly and land. They also like to herd all the runner ducks into an orderly parade with no particular destination. They will nip at a single chicken, but a flock of chickens will scare them away from feed.
Last spring, both laid eggs and vigorously protected their nests. The eggs, which I gingerly gathered while they were out of their shelter, were beautiful and tasty.
Mine live in a small wood and hardware cloth shelter that locks at night. It is surrounded by dog kennel panels for a playpen, but they usually spend their days free ranging. The two-foot wire fence across the front of the property is enough to discourage them from trying to fly their un-aerodynamic bodies onto the roadway. I supplement their free-range diet with Purina all-flock food, and they have their own baby pool in their playpen. But, hey, they're geese -- so they would much rather take over the ducks' pool!
As well as sooo much love!
I adore my pair. 
