Population information

Nom ordre Anseriformes
Nom famille Anhimidae
Nom scientifique Chauna torquata Nom courant Southern Screamer
Nom population C South America
Aire de reproduction Bolivia & S Brazil to N Argentina, Uruguay Aire de non-reproduction
Catégorie de la Liste Rouge Least Concern
Regions Ramsar Neotropics
Notes

Réseau de conservation

Réseau de conservation Notes
Pas des Réseaux de conservation
Note:

Taille de population

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 1 1993 1993 100,000 1,000,000 [R119]
WPE 2 1993 1993 100,000 1,000,000 [R119]
WPE 3 1993 1993 100,000 1,000,000 [R119]
WPE 4 1993 1993 100,000 1,000,000 [R119]
WPE 5 2005 2011 100,000 1,000,000 Best guess [R1070] [R1092] [R1183] [R1191]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1982 1992 STA [R119]
WPE 2 1982 1992 STA [R119]
WPE 3 1982 1992 STA [R119]
WPE 4 1982 1992 STA [R119]
WPE 5 2001 2010 STA Reasonable [R119]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 0 -1
WPE 2 0 -1
WPE 3 2002 10000
WPE 4 2006 10000
WPE 5 2012 10000

References

  • R119 - Canevari, P. (pers. comm.). 1993. Unpublished information from Neotropical Wetlands Program.
  • R1070 - Franke, I. 2006. Waterbirds in Per?: Final report. Museo de Historia Natural de la Universidad Nacional Mayor de San Marcos. Lima (unpublished report to BirdLife International).
  • R1092 - Huanca Llanos, N.E. 2006. Reporte final, Aves Acu?ticas en Bolivia. Asociaci?n Armonia, Santa Cruz de la Sierra (unpublished report to BirdLife International).
  • R1183 - Unterkofler, D. and Blanco, D.E. 2012. Unpublished information on Argentine waterbirds.
  • R1191 - Wetlands International Argentina (compiler). 2012. Unpublished information from the Neotropical Waterbird Census, 1990-2011, including contributions from Colombia (Asociaci?n Calidris in litt.), Paraguay (Guyra Paraguay in litt.), Uruguay (Averaves in litt.) and Venezuela (Uni?n Venezolana de Ornit?logos in litt.).

Notes




Copyright Wetlands International 2012

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