Bonaparte's Gull flocks are regular at this time of year in Puget
Sound. I have seen them at the mouth of Rich Passage for the last 10
days and at one point on shore at Yukon Harbor near Southworth, Kitsap County.
On April 6 I saw a single flock of about 200 of them just east of the
floating salmon farm as the late afternoon ferry to Bremerton
approached Rich Passage

Mark Oberle
Port Orchard, Washington
oberle at mindspring.com