8am to 11am birds on Cottonwood Marsh and environs were a Semipalmated Plover, 4 Semipalmated Sandpipers, Spotted and Solitary Sandpipers, 13 Wilson's Phalarope and 4 American Avocets. Within the lusher borders of Sawhill's ponds were a female Bobolink, Warbling Vireo's, a flock of 8 White crowned Sparrows and many YR/Audubon Warblers. Good May Birding, Carl Starace, Niwot