Clapper Rail
Clapper Rail
Rallus crepitans
At a Glance
A clattering cackle in the salt marsh is often our first clue to the presence of this big rail. The Clapper Rail is usually hidden in dense cover, but sometimes we see it stalking boldly along the muddy edge of the marsh, twitching its short tail as it walks, or swimming across a tidal creek. Historically it was abundant on the Atlantic Coast -- 约炮视频 reported that it was possible to find a hundred nests in a day -- but now much more localized, as coastal marsh has been broken up by development.
All bird guide text and rangemaps adapted from by Kenn Kaufman漏 1996, used by permission of Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Category
Chicken-like Marsh Birds, Rails, Gallinules, Coots
IUCN Status
Least Concern
Habitat
Coasts and Shorelines, Saltwater Wetlands
Region
California, Eastern Canada, Florida, Mid Atlantic, New England, Southeast, Southwest, Texas
Behavior
Flushes, Running, Swimming
Population
210.000
Range & Identification
Migration & Range Maps
Found all year in many parts of range. On Atlantic Coast, some withdrawal in winter from northern end of range, and an influx of northern birds is noted in parts of the southeast in winter.
Description
14-15" (36-38 cm). Chicken-sized, with long narrow bill, barring on flanks. Underparts vary from buffy gray on Atlantic Coast to dull cinnamon on Gulf Coast. Juvenile is darker and duller. Almost never seen away from salt marshes.
Size
About the size of a Crow
Color
Brown, Gray, Red, White
Wing Shape
Broad, Rounded
Tail Shape
Short
Songs and Calls
Harsh clattering kek-kek-kek-kek-kek.
Call Pattern
Falling, Flat
Call Type
Chatter, Chirp/Chip, Rattle
Habitat
Salt marshes, rarely brackish; locally in mangroves in southeast. Along most of Atlantic and Gulf Coasts, strictly a bird of salt marsh, sometimes in adjacent brackish marsh. In Florida, also found in shallow mangrove swamps.
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Behavior
Eggs
Usually 7-11, sometimes 5-12 or more. Pale yellow to olive-buff, blotched with brown and gray. Incubation is by both sexes, 20-23 days.
Young
Downy young may leave nest soon after hatching. Both parents probably feed young. Parents may brood young in a separate nest from the one in which the eggs hatched. Young can fly in about 9-10 weeks.
Feeding Behavior
Forages by walking in shallow water or on mud, especially on falling tide or at low tide, picking up items from the ground or vegetation, sometimes probing in mud or water.
Diet
Includes crustaceans, insects, fish. Diet varies with locality, and includes a wide variety of small prey. Crustaceans often favored, especially crabs, also crayfish and others. Also eats many aquatic insects, small fish, mollusks, worms, frogs. Eats seeds at times.
Nesting
In courtship displays, male approaches female, points bill down, and swings head from side to side; also stands erect with neck stretched, bill open. Male may feed female. Nest site is in clump of grass or other vegetation in marsh, near the upper reaches of high tide, or on bank near water. Nest (built by both sexes, although male may do more) is well-built cup of grasses and sedges, lined with finer material, often with vegetation woven into a canopy over nest. Often a ramp of plant material leads from ground up to nest.
Conservation
Conservation Status
Still fairly common, but has seriously declined in parts of the east. Loss of habitat is main threat.
Climate Threats Facing the Clapper Rail
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.