Black Turnstone

Fascinating facts about the Black Turnstone

• A bird smaller than a robin undertakes a 6,000-kilometre migration twice yearly between Alaskan breeding grounds and wintering sites as far south as Baja California. Over a 20-year lifespan, this adds up to roughly 240,000 kilometres — further than the distance from Earth to the Moon. They do it on wings that weigh less than a coin.
• Black turnstones are built like tiny bulldozers: their necks are thick and muscular, their bodies squat and heavy, and their legs are positioned far back on their bodies. This design lets them flip rocks the size of grapefruit while foraging — a hunting technique almost no other shorebird attempts. They can flip a stone twice their own body weight.
• In Alaska's Arctic, where these birds breed, temperatures can drop to minus 40 degrees Celsius and daylight lasts 20 hours a day. Their chicks must gain enough fat in just 20 to 25 days to survive a journey south — one of the fastest fledging times of any shorebird. If they miss this window, they starve before the ice closes in.
• Black turnstones moult into a completely different plumage each year: breeding birds are mottled brown and black, but by winter they're silvery-grey and nearly indistinguishable from three other turnstone species. This seasonal disguise lets them vanish into coastal rocks where they spend half their lives, making population counts unreliable and conservation efforts harder to measure.
• These birds spend their winters on rocky Pacific coastlines where waves crash with tremendous force, yet they've evolved a grip with no equal among shorebirds. Their toe pads secrete an oily substance that lets them cling to wet stone in pounding surf, a feature so specialized that losing coastal access to development or pollution threatens the entire western population in ways other birds never face.

At a glance

About the Black Turnstone

As the tide recedes, the black turnstone emerges, its sleek, dark form weaving deftly among the exposed rocks and tidal pools, searching for the hidden treasures of the intertidal zone. With its distinctive black and white plumage glistening in the sunlight, this agile shorebird moves with a quiet confidence, its sharp eyes scanning the terrain for the unsuspecting crustaceans and mollusks that will sustain it on its long migratory journeys. In its element, the black turnstone is a master of the ephemeral world of the shoreline, its very existence a testament to the enduring beauty of adaptation and resilience.

Discover more wildlife