FWIW, I spent about an hour and a half last night and again this morning at Silver Lake and did not find any Purple Martins. Most of the swallows were pretty high but the light was good today and I could easily identify them even at the furthest distance of observation. It might be worth taking a look from time to time but I won’t be able to get there again for three or four days. As a consolation the Red-necked Grebes are present and were calling last night and I heard a Virginia Rail call several times at dusk.
Cliff
Home of Idaho Birding and the Idaho Bird Records Committee