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Limantour Beach at Point Reyes National Seashore is wide, with ocean on one side and grassy dunes on the other. Its open sand is home to the western snowy plover (Charadrius nivosus nivosus), a small brown-and-white shorebird that depends on wide, undisturbed beaches.
Western snowy plovers. NPS / Matt Lau.
How plovers live
- Plovers are low on the food chain and need a clear, all-around view to spot predators such as hawks and ravens, which take eggs or adults.
- In the March–September breeding season, they lay eggs in shallow scrapes in the sand, on beaches such as Limantour and North Beach. Their brown backs hide them from above, and they tuck driftwood, eelgrass and other debris around nests for camouflage.
- They can also nest among American beachgrass, which historically lined the dunes — sparse and low enough to shelter them while they keep watch.
A snowy plover nest on the sand. NPS / Matt Lau.
An indicator species
The plovers' fate is so closely tied to the beach and dunes that they're an indicator species: when the beach is disturbed, by people or by natural change, their numbers reflect it. They're already federally threatened. Park biologists have monitored them since the 1980s to learn how to protect them and to track changes in their habitat.
Squeezed from both sides
| Threat | Effect |
|---|---|
| Invasive European beachgrass | Outcompetes native American beachgrass. It's too dense and tall for nesting, and it hides predators such as rodents, skunks and coyotes. At Limantour it blankets the dunes, leaving plovers only the open beach |
| Rising seas | Climate change has already raised sea level about nine inches, and it could rise as much as six more feet by 2100. Plovers could move inland — if the dunes were usable |
Human activity and development have already degraded much of this shoreline. Squeezed between invasive plants and the sea, plovers could run out of room.
Plover chicks shelter by native American beachgrass. NPS / Matt Lau.
What restoration can do
Biologists can't stop sea-level rise, but they can fight invasive plants. At nearby Abbotts Lagoon, European beachgrass and iceplant had taken over the dunes; plover numbers fell, and the native Tidestrom's lupine suffered. In 2011 the Park Service sponsored a dune restoration: crews with bulldozers and shovels cleared acres of invasives. Tens of thousands of new Tidestrom's lupines sprouted, snowy plovers returned to nest on the dunes, and other native species benefited.
Caught between invasive plants and the rising sea, these small and delicate birds will have few options left. But the fight is not over. While there is little that park biologists can do to fight sea level rise or alter climate change, they can work against invasive plants. NPS / Matt Lau.
Restoration gives plovers room to move inland as the sea rises. At Limantour, the dunes are still unusable, but the beach remains big enough for its small population.
How to help
- Leave no trace and give plovers space.
- Volunteer for invasive plant removal or as a Snowy Plover Docent.
- Report sightings of plovers with leg bands to scientists.
Sources
Based on "Understanding the Space Between Land and Sea Through the Eyes of Snowy Plovers," by science communication intern Claire Baker of the Point Reyes National Seashore Association, with information from Park Service wildlife biologist Matt Lau, published by the National Park Service; rewritten in hubnx's own words. Pictures an earlier version of this page left out were restored on 2026-09-26.
В изданияхGolden Gate National Recreation AreaPoint Reyes National Seashore
Лицензия: CC0 1.0 (общественное достояние) · По материалам www.nps.gov
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