We also had a juvenile Sabine’s Gull yesterday, but at Mackay Reservoir in Custer County. Like Cliff’s, not concerned about our presence. Initially seen foraging on shore right at the water’s edge, then flushed by Ring-billed Gull into the water where it floated nearby long enough for photos.
Earlier in the day, I had a too-brief view of a small tern. The lousy photos I was able to snap of it in flight make me wonder whether it might be a Common rather than a Forster’s. I have very little tern experience so would be happy for any feedback. http://ebird.org/ebird/view/checklist/S39376445
Wendy McCradyMackay, ID