Population information

Order name Gruiformes
Family name Rallidae
Scientific name Laterallus jamaicensis Common name Black Rail
Population name coturniculus
Breeding range Arizona, California & Baja California, C Sierra Nevada; most now along N San Fransisco Bay Non-breeding range
Red List Category Near Threatened
Ramsar regions North America
Notes

Conservation Framework

Conservation framework Notes
No conservation frameworks
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 3 1993 1993 1 10,000 [R208]
WPE 4 1993 1993 1 10,000 [R208]
WPE 1 0 0 -1 -1
WPE 2 0 0 -1 -1
WPE 5 2001 2001 10,000 25,000 Expert opinion [S6022] [R1063]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 1973 1989 DEC [R208]
WPE 4 1973 1989 DEC [R208]
WPE 1 0 0 Unknown
WPE 2 0 0 Unknown
WPE 5 1973 1989 DEC [R208]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 100
WPE 4 2006 100
WPE 1 0 -1
WPE 2 0 -1
WPE 5 2012 250

References

  • R208 - Eddleman, W.R., Flores, R.E. and Legare, M.L. 1994. Black Rail (Laterallus jamaicensis) In: The birds of North America, No 123. (A. Poole and F. Gill, eds.). The Academy of Natural Sciences, Philadelphia, PA and The American Ornithologists' Union, Washington
  • R1063 - Evens, J.G., and Nur, N. 2002. California Black Rails in the San Francisco Bay region: spatial and temporal variation in distribution and abundance. Bird Populations 6:1-12.

Notes

  • S6022 - The population is estimated at 7,100 individuals in northern section of the Bay area and 7,200 in the western Sacramento?San Joaquin River delta.



Copyright Wetlands International 2012

Citation: Wetlands International (). "Waterbird Population Estimates" . Retrieved from wpe.wetlands.org on