We live in the Puget Sound area too - and have hawks, falcons,owls, ravens, and eagles around here. So far (knocking on wood) I haven't lost any birds. The key seems to be cover so they can get away. My geese / ducks come flying up the slope to the trees if one of the raptors gets close. I think actually that the geese protect the chickens and ducks somewhat by being so much bigger -- they discourage the smaller hawks.
The ravens have been stealing duck eggs, and I've heard they'll steal baby chicks/ducklings/ maybe goslings . . . but they don't bother the grown birds.
There's a pair of bald eagles that nest near our house, and they fly over frequently. I'm sure they could tackle a goose, but so far they haven't bothered, either because they have plenty to eat, or because the geese would put up too much of a fight, or because the geese take themselves away to the trees . . .
The owls actually worry me more, because of the ducks . . . I've heard they can be very hard to discourage. Our owls here are either not large enough, or full of mice from the hay fields . . .