American White Pelican

Pelecanus erythrorhynchos

General Status Rank: 
May Be At Risk
ELCODE: 
ABNFC01010
Common Name: 
American White Pelican
Scientific Name: 
Pelecanus erythrorhynchos
Taxonomy
Group: 
Bird
Kingdom: 
Animalia
Phylum: 
Chordata
Class: 
Aves
Order: 
Pelecaniformes
Family: 
Pelecanidae
References: 
General Biology

Female Age at Maturity

3 years
References: 

Longevity

Oldest known 26 years.
References: 

Economic/Human Considerations

Predator of fish.
References: 
Habitat
Islands on interior lakes.
References: 
Distribution

Ecozones

Taiga Shield, Boreal Plains
References: 

Distribution

Range extent calculated by multiplying the percent area that the species is found in by the area of NWT. Range extent covers ~1% NWT mainland. Range extent visually estimated from range map in "Distribution of birds in NWT & Nunavut: 2009 Review" (CWS).
Score: 
E
References: 
Winter Distribution Description: 
Southern US to central America.

Number of Occurrences

Very small. Only one known breeding colony at present (actually in Alberta). Non-breeding birds consistently occur at several other locations (MAF4); on 5-7 islands (H275). Extra limital in Arctic Red River (June 2016).
Score: 
A
References: 

Historical Distribution

Boreal Plains
References: 

Area of Occupancy

Possibly increasing; recent observations suggest this species may be increasing in numbers in NWT and new breeding sites may eventually be colonized (H108). Pelican had left the area (Trout Lake) for a long time apparently. Elders have pelican stories (J. McKey 2014). Pelicans were spotted at Trout Lake in 2006, 2007, 2012 and 2014 (D. Allaire 2014). 10 June 2004 we had 3 white pelicans at Fort Simpson (N. Larter 2014) (in H301).
Score: 
-
References: 
Population

Population Size

Average 600, between 2000-2013. No systematic surveys except Mountain Rapids, south of Fort Smith in AB. Number of nesting pairs fluctuates between 500 and 700 (population data from Mountain Rapids, Alberta (2013)) (H275).
Score: 
D
References: 

Density

Colonial.
References: 
Threats

Threats

Human disturbance, hydro-electric development. Human disturbance at breeding sites could preclude any attempts to establish new breeding colonies.
References: 

Intrinsic Vulnerability

Small and newly established or re-colonizing populations very vulnerable to disturbance. NWT population at extreme northern limits of range. If NWT breeding population is in early stages of colonization / re-colonization and occurs only in areas accessible to humans, may negatively affect establishment.
Score: 
B
References: 
General Status Rank
Rank: 
May Be At Risk
Status Rank Description: 
Due to very low number of occurrences, type of potential threats, species at northern limit in the NWT, common elsewhere. Population in the NWT likely stable, but due to relative newness of the colonies, they are particularly vulnerable to human disturbance. The population size and range extent is also small.
S Rank: 
S2N
Decision Process Description: 
Drafted by committee (V. Johnston, L. Wakelyn, S. Carriere, J. Hines, and M. Fournier in 2000). Reviewed in 2005 by J. Hines and C. Swoboda based on printed literature only, no change in status. Reviewed in 2010, no change. Reviewed by D. Hogan (CWS) and S. Carriere (ECC) in 2015, no change. Reviewed in 2020, no change.
Last Updated: 
March 21, 2024
Status Designations

NWT - Assessment by Species at Risk Committee

NWT SARC Assessment: 
Special Concern
Species qualifies for Threatened under criterion SK(D2) (of assessment process for Species at Risk (NWT) Act) because the area of occupancy is less than 20 km2 (the nesting colony is 8 km2), and it has only one known nesting location, such that it is prone to the effects of diseases within a very short period of time in an uncertain future. However, in the NWT and elsewhere, populations of American white pelican have been increasing in numbers and there is clear indication of rescue effect (immigration) from southern populations. American white pelicans are susceptible to a variety of diseases and parasites that have the potential of wiping out entire colonies because of their colonial breeding behaviour. Disease outbreaks appear to be increasing in many parts of the range. American white pelicans are highly mobile birds with significant gene flow throughout the North American population. They can change where they breed and/or forage if local conditions are no longer suitable. Further, they are likely to colonize new areas and recolonize an area following local extirpation. They have been reported nesting in the Oracha Falls area on the Taltson River, NWT, in the past, but current information is not available. Some climate change modeling suggests an expansion at the northern edge of their range, representing breeding areas. They are also protected through various laws and regulations.

NWT - Species at Risk Legal Status

NWT Status Rank: 
-
While assessed as a species of Special Concern in the NWT under the Species at Risk (NWT) Act, American white pelican has not been listed by the NWT Conference of Management Authorities on Species at Risk (CMA). In their decision not to list, the CMA noted that the NWT population's only known nesting location is outside the NWT (in Alberta). Species at risk legislation in the NWT does not have powers to directly protect the nesting area from identified threats, nor to protect the pelicans while they are at the nest. Listing would therefore not enable conservation measures or management planning that would be applicable to the nesting area. Potential future impacts of disease or parasite outbreaks were identified as a key threat to pelicans in the NWT, including avian botulism, West Nile virus, H5N1 highly pathogenic avian influenza (HPAI or avian flu), and Newcastle disease. Insufficient information was felt to be available to conclude that these diseases are a priority driver of vulnerability for this species in the NWT. It is reasonable to consider diseases as a threat for this species in the NWT, as they would be to any species of colonial nesting bird, but the frequency and magnitude of disease effects cannot be estimated. There is ultimately a high level of uncertainty regarding potential population level impacts. To date, the diseases of concern have not been documented in the NWT. Populations of this species have been increasing in the NWT, in Canada, and in most of North America. The pelicans found in the NWT are highly mobile, are not isolated, and there is evidence of genetic mixing. In the NWT, the Wildlife Act prevents destroying or disturbing the nest of a bird when the nest is occupied by a bird or its eggs. The nesting islands in Alberta are already protected seasonally (April 15-September 15) under provincial legislation. A Transport Canada regulation prevents low altitude flights over the sites during the same period.

Canada – Assessment by Committee on the Status of Endangered Wildlife in Canada

COSEWIC Status: 
-

References

Age Of Maturity

  • Sloan, N. F. (1982) Status of breeding colonies of Pelicans in the United States through 1979. American Birds 36: 250–254 - CS10 Return

Area of Occupancy

  • Bradley, M (1999) Personnal Communication. Biologist / Wood Buffalo National Park, Fort Smith, NT - H122 Return
  • Sirois, J., M.A. Fournier, and M. Kay (1995) The colonial waterbirds of Great Slave Lake, Northwest Territories: an annotated atlas. Canadian Wildlife Service Occasional Paper No. 89 - MAF4 Return
  • Dunn, E. (1996) Trends in "other" waterbirds. Environment Canada / Canadian Wildlife Service Bird Trends, No.5, Fall 1996 CWS Office - Mike Fournier - MAF5 Return
  • Pelican Advisory Council (2013) Slave River Pelicans. Iinformation sheet) and poster presented at the South Slave Wildlife Workshop - Ft Smith 29-31 October 2013 info sheet printed in binder - H275 Return

Density

  • Sirois, J., M.A. Fournier, and M. Kay (1995) The colonial waterbirds of Great Slave Lake, Northwest Territories: an annotated atlas. Canadian Wildlife Service Occasional Paper No. 89 - MAF4 Return

Economic Status

  • Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return

Ecozones

  • Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return

Habitat

  • Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return
  • Fournier M.A. (1999) Personal Communication. - H108 Return

Historical Distribution

  • Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return

Intrinsic Vulnerability

  • Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return
  • Fournier M.A. (1999) Personal Communication. - H108 Return

Longevity

  • Clapp, R. B., Klimkiewicz, M. K., Kennard, J. H. (1982) Longevity records of North American birds: Gaviidae through Alcidae. Journal of Field Ornithology 53: 81–124 - CS11 Return

NWT Known Subspecies

Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return

Number of Occurrences

  • Sirois, J., M.A. Fournier, and M. Kay (1995) The colonial waterbirds of Great Slave Lake, Northwest Territories: an annotated atlas. Canadian Wildlife Service Occasional Paper No. 89 - MAF4 Return
  • NWT Species Group (2012) NWT Species Facebook group. https://www.facebook.com/#!/groups/NWTSpecies/ - W101 Return
  • Pelican Advisory Council (2013) Slave River Pelicans. Iinformation sheet) and poster presented at the South Slave Wildlife Workshop - Ft Smith 29-31 October 2013 info sheet printed in binder - H275 Return

Population Size

Sirois, J., M.A. Fournier, and M. Kay (1995) The colonial waterbirds of Great Slave Lake, Northwest Territories: an annotated atlas. Canadian Wildlife Service Occasional Paper No. 89 - MAF4 Return
,
Pelican Advisory Council (2013) Slave River Pelicans. Iinformation sheet) and poster presented at the South Slave Wildlife Workshop - Ft Smith 29-31 October 2013 info sheet printed in binder - H275 Return

Range Extent

  • Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return
  • Sirois, J., M.A. Fournier, and M. Kay (1995) The colonial waterbirds of Great Slave Lake, Northwest Territories: an annotated atlas. Canadian Wildlife Service Occasional Paper No. 89 - MAF4 Return

Taxonomy

  • Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return

Threats

  • Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return
  • Fournier M.A. (1999) Personal Communication. - H108 Return