I frequently find Caspian terns hanging out on the south shore of Yukon
Harbor south of Manchester along the road going out to Southworth. I have
also seen them frequently along the south side of Sinclair inlet anywhere
from West Bay (near Bay Ford dealership) out to just beyond the Annapolis
sewage treatment facility. The area from Annapolis out to Rich Passage is a
sure spot to get harlequin ducks just about year round.

I don't know of any place where the terns might be breeding though, sorry.

Unfortunately the best time to find the terns is during the low tides and
this time of year the tidal smell can be a bit overwhelming on warm days.
And Yukon Harbor area has a problem with bacteria in summer and sometimes
the stench on the south shore is so bad one can hardly breath. So plan any
trips accordingly.

Happy birding.

Mary Hrudkaj
Belfair/North Mason county