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As of November 2026
The ongoing census on this ground is a species list, not a circle count. The Audubon Indiana birding account, read first-hand, counts more than 220 bird species recorded at Potato Creek State Park, with twenty-three species of ducks sighted from fall through spring, Common Loon and Horned Grebe in the same seasons, Sandhill Crane noted as having nested locally, and the eastern end of Worster Lake named as shorebird ground when water is low in late summer and fall. A second carrier counts "over 200 species" — the two figures print together, 200-plus and 220-plus, as counts of different vintages by different counters, neither averaged into the other. The baseline's counted-bird institution, the Christmas Bird Count, was tested for this ground: no Christmas Bird Count circle centered on North Liberty or Potato Creek was found in the carriers reached, and the institution prints here as a tested negative at that strength, its settler the National Audubon Society's circle registry. The heron-rookery test prints the same way: no rookery on this ground was found in the carriers reached, and none is claimed.