Birds Active during the day

Hudsonian Whimbrel

Numenius hudsonicus

iNaturalist eBird Wikipedia

A champion of long-distance flight, the Hudsonian Whimbrel is easily identified by its gracefully down-curved bill and striking head stripes. This coastal traveler brings the spirit of the wild subarctic to mudflats and beaches across the Americas.

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Quick Identification

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Size

Length: 37–47 cm (14.5–18.5 in); Wingspan: 76–89 cm (30–35 in); Weight: 270–490 g (9.5–17.3 oz)

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Colors

Mottled grey-brown upperparts and pale buff underparts; distinctive dark eye-line and dark lateral crown stripes with a pale central stripe.

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Key Features

Long, strongly decurved (down-turned) bill
Boldly striped crown with a pale median stripe
Greyish-brown plumage with heavy streaking on the neck
Lack of a white rump patch (distinguishes it from Eurasian species)

When You’ll See Them

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Activity pattern Active during the day

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Peak hours 6-10 AM, 3-7 PM (Tide-dependent)

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Season May-June and August-September

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Diet Specializes in crabs (particularly fiddler crabs) and other marine invertebrates; also eats insects and berries like crowberries during the breeding season.

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Habitat Coastal mudflats, salt marshes, and sandy beaches during migration; open subarctic tundra and muskeg for breeding.

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Where Does the Hudsonian Whimbrel Live?

Native to the Americas, the Hudsonian Whimbrel is a master of the Western Hemisphere's coastlines. It breeds across the subarctic regions of Alaska and northern Canada, from the Yukon to the shores of the Hudson Bay. During the non-breeding season, it occupies a massive range stretching from the southern United States and Mexico through Central America, reaching as far south as the rocky coasts of Chile and Argentina. It is a common sight along both the Atlantic and Pacific flyways during its spring and fall journeys.

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9 Countries

15.5M km² Range

Least Concern Conservation

CA Canada US United States MX Mexico BR Brazil CL Chile PE Peru AR Argentina PA Panama CR Costa Rica

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iNaturalist / Verified observation data

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Behavior

Hudsonian Whimbrels are wary and highly social shorebirds, often seen in small flocks during their long-distance migrations. They are famous for their remarkable endurance, flying thousands of miles non-stop between breeding and wintering grounds. When foraging, they use their specialized decurved bills to probe deep into mudflats or reach into crab burrows, often moving with a steady, methodical pace across the shoreline.

While they are relatively shy around humans, they are vocal birds, particularly when alarmed. Their most common call is a series of 5–7 rapid, high-pitched whistling notes. During the breeding season on the subarctic tundra, males perform elaborate 'aerial song' displays, circling high in the air while vibrating their wings to create a unique whistling sound to defend their territory.

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Camera Tips

Capturing a Hudsonian Whimbrel on camera requires a deep understanding of tidal cycles. These birds follow the water line; the best time to record them is during the two hours before and after high tide, when the rising water pushes them off the distant mudflats and closer to the marsh edges where your camera is likely mounted. Look for 'staging' areas—specific patches of salt marsh or sandy spits where birds gather to rest or preen between feeding bouts.

For camera placement, use a low-profile ground stake or a tripod weighted with sandbags. Position the lens about 12 to 18 inches above the ground to get an intimate, eye-level perspective of the bird. This angle highlights the dramatic curve of the bill and the intricate pattern of the feathers. Because these birds are sensitive to movement and unusual shapes, use a camouflage housing or wrap your camera in burlap to blend it into the surrounding marsh grass or driftwood.

Since Whimbrels are often on the move while probing for food, set your camera to a fast shutter speed or high-frame-rate video to avoid motion blur. If your AI camera allows for zone triggers, focus on the edge of a tide pool or a cluster of fiddler crab burrows. Avoid placing cameras in areas with heavy human foot traffic, as these birds are easily spooked and will relocate to quieter sections of the beach if disturbed.

Similar Species

Species that look similar or are commonly confused with Hudsonian Whimbrel.

Long-billed Curlew

Much larger with a significantly longer bill and lacks the bold dark stripes on the crown.

Eurasian Whimbrel

Nearly identical but has a prominent white wedge on the lower back and rump, whereas the Hudsonian is dark-rumped.

Marbled Godwit

Possesses a long bill that curves slightly upward at the tip, unlike the Whimbrel's downward-curving bill.

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Frequently Asked Questions

While they are diurnal, their activity is primarily dictated by the tides rather than the sun. They are most active when the tide is moving, as this exposes the mudflats and crabs they feed on. Early morning and late afternoon usually offer the best lighting for observation.

You can't attract them with traditional bird feeders. However, if you live on the coast, maintaining a healthy, chemical-free salt marsh or shoreline with native vegetation will provide the habitat and prey (like fiddler crabs) they need to stop and rest in your area.

They are specialists that primarily eat small crabs, particularly fiddler crabs. They also consume marine worms, mollusks, and occasionally berries or insects when they are on their northern breeding grounds in the tundra.

They are rarely seen in typical suburban backyards. They are strictly coastal birds during migration and winter, so you will only find them in suburban communities that directly border estuaries, salt marshes, or beaches.

The Hudsonian Whimbrel is smaller and has a shorter bill than the Long-billed Curlew. Most importantly, the Whimbrel has bold dark stripes on its crown, while the Long-billed Curlew has a plain, unstriped head.

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