Ground-nesting shorebirds including plovers and terns face severe welfare and conservation threats from human beach disturbance during the breeding season.
Shorebird nesting welfare is acutely sensitive to human disturbance because nest abandonment and chick mortality cascade from brief disturbance events. A pair of nesting piping plovers that is repeatedly flushed from the nest fails to raise chicks in that season, losing both their reproductive investment and the welfare of eggs or chicks that fail. Beach users who respect posted closure areas and leash dogs during the breeding season directly protect individual bird welfare at the nest. The cumulative effect of good beach behavior across thousands of visitors determines colony-level breeding success.