Hudsonian Whimbrel
Hudsonian Whimbrel
Numenius hudsonicus
At a Glance
The Hudsonian Whimbrel nests in the Arctic across North America and concentrates in flocks at a few favored spots in migration, so that the observer sees either many of them or very small numbers. The name 'Whimbrel,' originating in England, apparently began as a loose interpretation of the bird's call.
All bird guide text and rangemaps adapted from Lives of North American Birds by Kenn Kaufman© 1996, used by permission of Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Category
Sandpiper-like Birds, Sandpipers
IUCN Status
Least Concern
Habitat
Coasts and Shorelines, Freshwater Wetlands, Lakes, Ponds, and Rivers, Saltwater Wetlands, Tundra and Boreal Habitats
Region
Alaska and The North, California, Eastern Canada, Florida, Great Lakes, Mid Atlantic, New England, Northwest, Plains, Rocky Mountains, Southeast, Southwest, Texas, Western Canada
Behavior
Direct Flight, Flap/Glide, Formation, Running
Population
1.800.000
Range & Identification
Migration & Range Maps
Has a wide wintering range, from our Pacific and southeastern coasts to southern South America. Closely related whimbrel species from Europe and Asia, with white on the lower back and rump, sometimes stray to North America.
Description
Sexes similar — Length: 17–18 in (43–46 cm); wingspan: 2 ft 8 in (81 cm); weight: 10.9–14.3 oz (310–404 g). Larger than most shorebirds, with a downcurved bill, the Hudsonian Whimbrel is rather plain gray-brown overall, but has strong black head stripes. Very plain-looking in flight, with no contrasting colors in wings or tail. Eurasian Whimbrels with white or pale rumps are sometimes seen in Alaska or on the Atlantic Coast.
Size
About the size of a Crow, About the size of a Mallard or Herring Gull
Color
Black, Brown, Tan
Wing Shape
Pointed, Tapered
Tail Shape
Rounded, Short, Square-tipped, Wedge-shaped
Songs and Calls
A series of 5-7 loud, clear, whistled notes: pip-pip-pip-pip-pip.
Call Pattern
Falling, Flat
Call Type
Scream, Trill, Whistle
Habitat
Shores, mudflats, marshes, tundra. The Hudsonian Whimbrel is found in a wide variety of habitats during migration. Most common on mudflats, but also found on rocky shores, sandy beaches, salt marshes, flooded agricultural fields, and grassy fields near the coast. In summer, the species breeds on Arctic tundra.
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Behavior
Eggs
4, sometimes 3. Olive to buff, blotched with shades of brown. Incubation is by both sexes, roughly 24-28 days.
Young
Downy young leave nest soon after hatching. Both parents tend young, but young feed themselves. Adults actively attack predators flying over nesting area, and will fly straight at human intruders, swerving aside at last moment. Age of young at first flight about 5-6 weeks.
Feeding Behavior
Forages by walking on open flats, picking up items from surface or probing just below surface; despite long bill, does not seem to probe deeply. When feeding on crabs, may break off legs and crush shell before swallowing body of crab.
Diet
Includes insects, crustaceans, and berries. On breeding grounds, the Hudsonian Whimbrel may feed mostly on insects at first, but berries (such as crowberry and cranberry) become a major part of the diet by late summer. On the coast, it often eats many crabs, amphipods, other crustaceans, marine worms, and small mollusks.
Nesting
Early in the breeding season, the male Hudsonian Whimbrel performs a flight display over the nesting territory: flies in large circles, alternately fluttering higher and gliding down, while giving a whistling, bubbling song. On the ground, members of a pair may call together. Nest site is on the ground, usually in a dry, raised area near low-lying wet tundra. Nest (probably built mostly by females) is a shallow depression, lined with bits of lichen, moss, and grass.
Conservation
Conservation Status
Numbers were seriously depleted by market hunters in the late 19th century, but have recovered somewhat since.
Climate Threats Facing the Hudsonian Whimbrel
Choose a temperature scenario below to see which threats will affect this species as warming increases. The same climate change-driven threats that put birds at risk will affect other wildlife and people, too.
