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For a few weeks every spring, the mudflats just west of us fill with one of the biggest bird gatherings in North America — as many as a million shorebirds, all stopping to eat and rest on the same journey. It happens on a schedule, in our backyard, and you can go watch it.
The shorebirds that crowd Grays Harbor each spring are in the middle of a staggering journey — some fly all the way from South and Central America to nesting grounds in the Arctic. That’s thousands of miles, and no bird can do it in one hop. They travel in stages, and they need places to land, refuel, and rest along the way.
Grays Harbor is one of those places — one of the largest shorebird stopovers on the whole Pacific coast. The birds arrive thin and hungry, feast on the mudflats for a few days, and can nearly double their weight in fatbefore lifting off again for the far north. Miss the window and they’d run out of fuel over the ocean.
Dozens of species pass through, but a handful make up almost the whole crowd:
The tiny superstar of the show — most of the flock is this one species, no bigger than a sparrow.
A slightly larger sandpiper with a droop-tipped bill. Western sandpipers and dunlin together make up about 80% of the birds.
Long-billed probers that sew the mud like sewing machines, bills going up and down.
A small, round plover with a single dark chest band — it runs, stops, and pecks instead of probing.
Those gray flats aren’t empty — they’re packed with tiny worms, shrimp-like amphipods, and a living film of algae. It is one of the richest bird cafeterias on the coast. One corner called Bowerman Basinis only about 2% of the estuary’s mudflats but draws up to half of all the spring shorebirds.
The birds feed on the flats at low tide, spread far out. As the tide rises it pushes them closer and closer to shore — so the best viewing is on an incoming high tide, when thousands of birds swirl up right in front of you. Watch for a peregrine falcon: when one dives in, the whole flock explodes into a rolling, twisting cloud.
Try it: drag the tide and watch the flock get pushed off the flats toward the shore — then all the way up.
The mudflat is wide open. Birds spread far out across the flats to probe for food — hard to see from shore.
This is the same Grays Harbor estuary where young salmon pause to change from river fish to ocean fish. Clean water and healthy mudflats feed both the fish heading out to sea and the birds passing overhead — the whole watershed and the whole flyway meet right here. See the salmon’s journey →
The Grays Harbor National Wildlife Refuge in Hoquiam — a short drive from Montesano — has a walking trail out to the flats. The peak is usually late April into early May, and the Grays Harbor Shorebird & Nature Festival is timed to match it. Check a tide table and aim for a rising high tide.
Follow a salmon from a gravel nest in the Satsop or Wynoochee all the way to the ocean and back.
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A logging mill pond right above town became one of Washington’s early state parks.
How a temperate rainforest works — and how it feeds the cold, clean streams salmon need.
North America’s largest elk, in herds around our valley and the Olympic Mountains.
Satsop, Wynoochee, Chehalis — our rivers carry Indigenous names and a deep salmon culture.
Real Montesano numbers to play with — salmon returns, rainfall, elk, floods, and towers.