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Overview
Distribution
National Distribution
United States
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
Type of Residency: Year-round
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Global Range: Resident locally along coast from central California south to Baja California and Nayarit, from Connecticut south to Belize; also in lower Colorado River valley and southern Salton Sea (migrates to Mexico for northern winter), and in South America.
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Physical Description
Size
Diagnostic Description
Differs from the king rail in being slightly smaller and usually duller (less rusty) (but juvenile king rail also is rather dull). Averages 13 cm longer than Virginia rail and has a much less rusty breast.
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Ecology
Habitat
Comments: Salt and brackish marshes and mangrove swamps, locally (mostly in lower Colorado River Valley) in freshwater marshes where associated with dense vegetation and/or abundant crayfish (AOU 1983).
Nests on the ground in growing or dead herbage or under a small bush, or in places raised above the ground in a grass tuft or clump of rushes (Harrison 1978), among mangrove roots. Nests on the highest, driest place in the marsh (Terres 1980).
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Migration
Non-Migrant: Yes. At least some populations of this species do not make significant seasonal migrations. Juvenile dispersal is not considered a migration.
Locally Migrant: Yes. At least some populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).
Locally Migrant: Yes. At least some populations of this species make annual migrations of over 200 km.
Northern populations tend to be partially migratory; some individuals may make interstate migrations. Populations in the southeastern U.S. may make intrastate migrations. Some individuals migrate overland (Crawford et al. 1983). Subspecies YUMANENSIS of lower Colorado River: some individuals may move southward into Mexico for winter, but generally resident (California DF&G 1990).
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Trophic Strategy
Comments: Eats crabs, crayfishes, mollusks, worms, and other invertebrates, sometimes small fishes, aquatic insects and parts of plants; forages mostly at low tide along banks of creeks in marsh and sometimes on mudflats (Terres 1980). See Zembal and Fancher (1988) for information on subspecies LEVIPES in California.
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Associations
Known predators
Haliaeetus leucocephalus
Circus cyaneus
Based on studies in:
USA: Florida (Estuarine)
This list may not be complete but is based on published studies.
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Known prey organisms
Brachiodontes exustus
Bivalvia
Crepidula fornicata
Crepidula convexa
Argopecten irradians
Chione cancellata
Sabellidae
Serpulidae
Pagurus
Pagurus maclaughlinae
Pinixia floridana
Neopanope texana
Acteon punctostriatus
Cadulus carolinesis
Swartziella catesbyana
Acetocina candei
Truncatella pulchella
Nassarius vibex
Olivella mutica
Haminoea succinea
Amphitritidae
Pectanaridae
Hylina veliei
Syllidae
Orbiniidae
Paraonidae
Spionidae
Cirratulidae
Capitellidae
Maldanidae
Aricidea
Jaspidella jaspidea
Nemertines
Nereidae
Hesionidae
Glyceridae
Onuphidae
Solariella lamellosa
Cerithium lutosum
Mitrella lunata
Anachis avara
Mangelia plicosa
Based on studies in:
USA: Florida (Estuarine)
This list may not be complete but is based on published studies.
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General Ecology
In Louisiana, home range 0.4-0.81 hectares, dimensions changed seasonally (see Zembal et al. 1989). In Arizona, home ranges varied from an average of 2.2 hectares (incubating females) to 21.0 hectares (August-October females), and from 3.6 hectares (incubating males) to 24.0 hectares (winter males; Eddleman 1989). In California, home ranges varied from 0.4 to 1.7 hectares (Zembal et al. 1989).
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Life History and Behavior
Life Expectancy
Lifespan, longevity, and ageing
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Reproduction
Eggs laid mostly March-July in California, April-July in Virginia, May-June in New York and New Jersey. Possibly 2 broods per year. Clutch size usually 9-12. Incubation 18-23 days, by both sexes. Young tended by both parents, independent at 5-6 weeks. See Manser 1990 for information on breeding biology in Jamaica.
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Molecular Biology and Genetics
Molecular Biology
Barcode data: Rallus longirostris
There are 2 barcode sequences available from BOLD and GenBank. Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species. See the BOLD taxonomy browser for more complete information about this specimen and other sequences.
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Download FASTA File
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Statistics of barcoding coverage: Rallus longirostris
Public Records: 2
Species: 3
Species With Barcodes: 1
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Conservation
Conservation Status
IUCN Red List Assessment
Red List Category
Red List Criteria
Version
Year Assessed
Assessor/s
Reviewer/s
Contributor/s
Justification
History
- 2008Least Concern
- 2004Least Concern
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National NatureServe Conservation Status
United States
Rounded National Status Rank: N5B,N5N : N5B: Secure - Breeding, N5N: Secure - Nonbreeding
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Management
Biological Research Needs: Investigate the occurrence and effects of toxic chemicals in the food web.
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Needs: Eddleman et al. (1988) made the following protection recommendations for North American rallids: enforce the 1985 Farm Act to protect wetlands from agricultural damage; accelerate USFWS acquisition of wetlands with high elevational diversity and high percentage of emergent vegetation; resume congressional funding of the Accelerated Research Program for Migratory and Upland Game Birds to fund research on habitat management; institute a USFWS hunting stamp for hunting rails and other migratory game birds other than waterfowl (this would facilitate contacting the harvesting public for data and provide funds for habitat protection); protect light-footed, California, and Yuma clapper rails from disturbance and habitat loss, and expand habitat for these rails; integrate the management of national wildlife refuges so as to provide habitat not only for waterfowl but also for rails and other waterbirds.
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Relevance to Humans and Ecosystems
Benefits
Economic Uses
Comments: Hunted in most of the eastern and Gulf coastal states (Eddleman et al. 1988).
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Wikipedia
Clapper Rail
| This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. Please improve this article by introducing more precise citations. (November 2010) |
The Clapper Rail (Rallus longirostris) is a member of the rail family, Rallidae. Some researchers believe that this bird and the similar King Rail are a single species; the two birds are known to interbreed.
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Distribution and habitat
It is found along the east coast of North America, the coasts and some islands of the Caribbean, and across northern South America to eastern Brazil. On the west coast, it breeds from central California through Mexico and south to northwestern Peru.
Despite this wide range, numbers of the Clapper Rail are now very low on the United States' west coast, because of destruction of the coastal marshland habitat. The largest population of the western subspecies, California Clapper Rail, R. l. obsoletus, numbering somewhere between 1,000 and 1,500 birds,[1] is in San Francisco Bay; there is a small inland population along the Colorado River. On the US east coast, populations are stable, although the numbers of this bird have declined due to habitat loss.
Description
The Clapper Rail is a chicken-sized bird that rarely flies. It is grayish brown with a pale chestnut breast and a noticeable white patch under the tail. Its bill curves slightly downwards. The Trinidadian subspecies R. l. pelodromus is more heavily marked with black above.
Behaviour
Feeding
These birds eat crustaceans, aquatic insects, and small fish. They search for food while walking, sometimes probing with their long bills, in shallow water or mud.
Breeding
The twig nest is placed low in mangrove roots, and 3-7 purple-spotted buff eggs are laid.
References
- BirdLife International (2004). Rallus longirostris. 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Retrieved on 11 May 2006. Database entry includes justification for why this species is of least concern
- Birds of Venezuela by Hilty, ISBN 0-7136-6418-5
- ffrench, Richard (1991). A Guide to the Birds of Trinidad and Tobago (2nd edition ed.). Comstock Publishing. ISBN 0-8014-9792-2.
- Rails by Taylor and van Perlo, ISBN 90-74345-20-4
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Names and Taxonomy
Taxonomy
Comments: Sometimes considered conspecific with Elegans (AOU 1998). Populations along Pacific coast of North America and in Colorado River Valley region variously have been treated as Longirostris, Elegans, or R. OBSOLETUS. (AOU 1983). See Avise and Zink (1988) for information on genetic divergence between Elegans and Longirostris.
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