Between Cliff's recent post for Fremont County & eBird showing Jefferson County sightings, can now add Bingham County for a recent Sabine's Gull.
This morning, while fly-fishing a mayfly hatch on the Snake, had an adult, in non-breeding plumage, Sabine's come very close overhead. At first glance, thought it was a tern. But, quickly realized it was a quite graceful & tailored gull. Made several passes overhead within feet of me.