Naval Base Kitsap Bremerton
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A Caspian tern colony has existed on warehouse rooftops at Naval Base Kitsap Bremerton since 2003. The Naval Base is located on the Olympic Peninsula, 40 km west of Seattle, in the City of Bremerton (WA). During 2005-2006, the colony site included three waterfront buildings within the naval shipyard adjacent to Sinclair Inlet. Caspian tern nests scrapes were confined to areas where small amounts of shells, sand, bone, and other debris accumulated along the ridgelines of each of rooftop. In 2007, the colony was limited to the roof of one of the three buildings. In 2005, USDA-Wildlife Services hazed the colony intensively during five nights beginning in early June until eggs were discovered, at which time the hazing was discontinued. In 2006, no hazing was conducted and a rough estimate suggested that the colony consisted of as many as 500 breeding pairs. In 2007, up to 900 Caspian terns were counted at the site in early May (Steve Holtom, USDA-Wildlife Services, personal communication); our best estimate for the size of this colony in 2007 was 117 breeding pairs. In 2008-2009, USDA-Wildlife Services, under contract from the U.S. Navy, prevented any nesting by Caspian terns at the rooftop colony site.
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