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Recovery Strategy for the Ross's Gull (Rhodostethia rosea) in Canada (Proposed)
- 2.1 Rationale for Recovery Feasibility
- 2.2 Recovery Goal
- 2.3 Recovery Objectives for the Ross’s Gull (2007-2011)
- 2.4 Approaches Recommended to Meet Recovery Objectives
- 2.5 Critical Habitat for Ross’s Gull
- 2.6 Existing Protection
- 2.7 Recommended Approach for Conservation and Habitat Protection
- 2.8 Performance Measures
- 2.9 Effects on Other Species
- 2.10 Statement of When One or More Action Plans Will Be Completed
2.1 Rationale for Recovery Feasibility
Maintaining the Ross's Gull breeding population and distribution within Canada is considered feasible based on four criteria (Environment Canada 2005). First, there are currently no known factors negatively affecting their productivity in Canada. Second, there is sufficient suitable habitat available to support the species. Third, significant threats to the species or its habitat can be avoided or mitigated through recovery actions. Finally, the techniques for effective recovery appear achievable for this species.
2.2 Recovery Goal
The Ross's Gull has always been rare in Canada, and does not appear to be declining. Because of its limited population numbers, there is little potential for this species to be downlisted from Threatened. Despite its small population size, maintaining Ross's Gull at its current distribution and population numbers should be feasible.
2.3 Recovery Objectives for the Ross's Gull (2007-2011)
The short-term objectives for the recovery of Ross's Gulls in Canada are to:
- maintain known current distribution and number of pairs of Ross's Gulls breeding in Canada over a five-year average (Priority – Urgent);
- encourage further research and surveys that may reveal previously unknown nesting concentrations in the Canadian Arctic (Priority – Urgent);
- protect breeding habitat through stewardship and conservation agreements and undertake studies to identify critical habitat (Priority – Necessary); and
- determine the significance of threats at breeding locations and implement management strategies to reduce threats (Priority – Beneficial).
2.4 Approaches Recommended to Meet Recovery Objectives
Table 1 provides a general description of the research and management activities needed to meet the recovery objectives, and broad strategies to address threats to the Ross's Gull. An action plan will contain more detail on the specific activities and will include an implementation schedule.
|Priority||Objective number||Threat addressed||Broad strategy to address threats||Recommended approaches to meet recovery objectives|
|Urgent||1, 2||All||Inventory and Monitoring|
|Necessary||1, 4||Human disturbance||Communication and Stewardship|
and site management
|Urgent||3, 4||Habitat Loss and Destruction||Habitat Protection and Stewardship|
2.5 Critical Habitat for Ross's Gull
The federal Species at Risk Act defines critical habitat as “….the habitat that is necessary for the survival or recovery of a listed wildlife species and that is identified as the species' critical habitat in a recovery strategy or in an action plan for the species.”
Critical habitat is not identified in this recovery strategy. This species is relatively unstudied in Canada, and we do not know what habitat is necessary for the survival and recovery of this species. There are very few breeding records for this species in Canada, occupation at the few known nesting sites appears to be intermittent, and fidelity to breeding areas is unknown. With such limited information, it is not possible to identify critical habitat at this time. Critical habitat will be identified through activities outlined in 2.5.1 (Schedule of Studies to Identify Critical Habitat) and will be included in a forthcoming action plan and/or a revised recovery strategy.
The nests of Ross's Gulls are protected under the Migratory Birds Convention Act, 1994 and as a “residence” under the Species at Risk Act throughout Canada.
2.5.1 Schedule of Studies to Identify Critical Habitat
Studies to identify critical habitat will be concentrated in the High Arctic, near one of the sites where the birds may nest (Mallory et al. 2006). (Conducting studies near Churchill would probably lead tourists to the active nesting areas..
Broad studies and actions to support the identification of critical habitat are outlined in Table 1.
This section outlines specific studies and actions necessary to identify critical habitat.
- By August 2008, identify characteristics of habitat occupied by breeding Ross's Gulls. Also undertake studies to determine impacts of disturbance on breeding gulls (including Ross's Gulls) in remote locations.
- On an ongoing basis, survey additional suitable habitat for presence of Ross's Gulls in the High Arctic and around Churchill. These surveys may identify additional critical habitat if new nesting areas are found.
- By December 2008, apply knowledge of significant habitat features to all areas within the breeding range and map known and potential breeding habitat.
- By December 2008, use synthesized information on abundance, distribution, and habitat use to identify critical habitat within an action plan and/or revised recovery strategy.
- Opportunistically identify potential foraging sites, resting sites, or transit sites that may be considered critical habitat.
2.6 Existing Protection
This species and its nests are protected under the Migratory Birds Convention Act, 1994, and Ross's Gull as a species is covered under the Species at Risk Act. The Migratory Birds Convention of 1916prohibits the hunting or collecting of the eggs, nests, and birds (“take”) of listed species in Canada and the United States. In addition, the Ross's Gull is listed as an endangered species under Manitoba's Endangered Species Act. Under this act, no person shall kill, injure, possess, disturb or interfere with an endangered species; destroy, disturb or interfere with the habitat of an endangered species; or damage, destroy, obstruct or remove a natural resource on which an endangered species depends for its life and propagation. Hunting of Ross's Gulls is also prohibited in Russia (Macey 1981).
The Churchill Special Conservation Area (35 823.1 ha), designated under the Manitoba Wildlife Act, was established to conserve and protect Ross's Gull nesting habitat around Churchill. Both the original and current breeding sites are located within the Churchill Special Conservation Area (G. Suggett, pers. comm.). In addition, the current Churchill breeding site is more difficult to access, thus limiting human disturbance. The northern breeding locations in Nunavut are not protected, but their remote and inaccessible locations limit human disturbance at these sites.
2.7 Recommended Approach for Conservation and Habitat Protection
The Manitoba site is located on Crown land. The federal and provincial government will work cooperatively to determine the appropriate approach for habitat protection of this site. Education and communication with the community and birdwatchers may be a useful tool in ensuring the conservation of this area.
In Nunavut, known breeding locations are all on Crown land and are extremely remote and difficult for tourists or even Inuit hunters to access during the breeding season. Thus, stewardship and conservation agreements should focus more on engaging community hunters' and trappers' organizations to assist in reporting sightings of birds during migration or breeding and in minimizing the incidental harvest of eggs or birds when hunters are after other species (e.g., Arctic Terns). Agreements should leave open the possibility of future habitat protection measures, should they be required. Engagement of the key federal land manager, Indian and Northern Affairs Canada, in conservation agreements will be crucial in ensuring habitat protection.
2.8 Performance Measures
The implementation of approaches identified within this recovery strategy to maintain the distribution and abundance of Ross's Gull will be considered successful if the following evaluation criteria are met:
- critical habitat has been protected at all designated locations through stewardship or conservation agreements.
- monitoring of Ross's Gulls demonstrates they are continuing to breed at known locations; and
- identification of threats to Ross's Gulls and their habitat (on a site-by-site basis) has resulted in the development and implementation of measures that eliminate, reduce, or mitigate threats.
2.9 Effects on Other Species
This recovery strategy may potentially benefit other species such as the Arctic Tern and Sabine's Gull, as Ross's Gulls are often found nesting in association with these birds. In addition, other northern breeding birds found in similar habitat may benefit from any conservation activities resulting from this strategy and the upcoming action plan. These species include Arctic Loon (Gavia arctica), Horned Grebe (Podiceps auritus), Long-tailed Duck (Clangula hyemalis), Common Eider (Somateria mollissima), King Eider (Somateria spectabilis), Greater Scaup (Aythya marila), Hudsonian Godwit (Limosa haemastica), Lesser Yellowlegs (Tringa flavipes), Stilt Sandpiper (Calidris himantopus), Common Redpoll (Carduelis flammea), and Smith's Longspur (Calcarius pictus) (Chartier and Cooke 1980).
While many species may benefit from the implementation of this recovery strategy and the upcoming action plan, some local populations of species may be negatively affected. For example, using deterrents to discourage Herring Gulls in the vicinity of Ross's Gull colonies could reduce Herring Gull reproductive success locally, but, given their abundance and wide distribution, this action would be unlikely to affect Herring Gull populations overall.
2.10 Statement of When One or More Action Plans Will Be Completed
The action plan for the Ross's Gull will be completed by June 2009. Steps to achieve recovery as listed in the recovery objectives will be ongoing in the interim.
1 Within its natural range of variability as observed between 1990 and 2005.
2 Includes Churchill (Manitoba) and three sites in Nunavut.
- Date Modified: