I need help in IDing the birds in the attached pics. They were photographed at approximately 12 pm on Sept. 14, 2018, at Huguenot Memorial City Park in Duval County, near Jacksonville, FL. Shorebirds are a new challenge for me, so any help and instruction will be most appreciated.
Pic 1: 4 peeps next to Black-Bellied Plover
Pic 2: 2 peeps in water with Skimmers, Caspian Terns, and Sanderlings in foreground.
Pic 3: peep next to Sanderlings for convenient size comparison.