Intra- and Interspecific Territorialism in Mixed Colonies of the Canada Goose Branta canadensis and the Greylag Goose Anser anser

Fabricius, Eric; Bylin, Anders; Fernö, Anders; Radesäter, Tommy

doi:10.2307/3675891

Cited by 10 publications

(6 citation statements)

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“…The consequences for the populations seem, however, not to be serious. Fabricius et al (1974) studied the interspecific relationship of nesting Greylag Geese Anser amer and Canada Geese on islets off the coast of southeastern Sweden. Interspecific aggressions were observed; nevertheless both species bred successfully and showed numerical increase in the area.…”

Section: Goose Populations In Southeastern Soalbard: Possible Implicamentioning

confidence: 99%

Study of the breeding ecology and behaviour of the Svalbard population of Light-bellied Brent Goose Branta bernicla hrota

Madsen¹,

Bregnballe

Mehlum

1989

Polar Research

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Nesting ecology and behaviour of the Light‐bellied Brent Goose was studied on Lurøya and adjacent islands in the Tusenoyane group, SE Svalbard, from 13 June to 30 July 1987. On Lurøya 38 pairs attempted to nest, and in the whole study area 98 pairs. Estimated median data of laying of first egg was 10 June, and median hatching date 7 July. Mean clutch size in the middle of the incubation period was 4.0 eggs. On Lurtfya nesting success was 25.7%, hatching success 28.6%, and hatching success for the whole study area was c. 24%. Most losses were attributed to predation (62% of all eggs), polar bears being the most severe predators. Until mid July the islands were surrounded by drift ice, and bears occurred regularly. Bears not only damaged nests but also created disturbance in the nesting colony, offering Arctic Skuas opportunity to take eggs from deserted nests. Other losses were due to female nest desertion during late incubation. Post‐hatching losses were negligible. 17 pairs of Barnacle Geese nested on an island adjacent to Lurøya, and pairs were nest prospecting on Lurøya, but were effectively expelled by territorial Brent males. During nesting, territorial Brent males spent most of the time in vigilance, followed by grazing and resting. Intruding avian predators and other geese were vigorously chased out of the territories. On average females were attentive to their nests 91% of the time. The rest of the time was spent foraging and preening in the territory. During nesting, time off the nest increased. Food resources on the islands were poor. Moss constituted the staple part of the diet during nesting and post‐hatching, but the geese selected Cochlearia and Saxifraga. In wet moss carpets where most foraging took place, Cochlearia was almost completely depleted. The high predation pressure observed may be the prime factor responsible for the general low reproductive output of the population, as observed in the Danish wintering quarters. It seems that the Barnacle Goose population on Tusenøyane is expanding, and interspecific competition for nest sites and food may arise.

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Section: Goose Populations In Southeastern Soalbard: Possible Implicamentioning

confidence: 99%

Study of the breeding ecology and behaviour of the Svalbard population of Light-bellied Brent Goose Branta bernicla hrota

Madsen¹,

Bregnballe

Mehlum

1989

Polar Research

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“…Problems regarding hybridisation (individual level) and competition are thought to be minor despite much speculation, especially with regard to competition (Allan et al 1995). Fabricius et al (1974) documented considerable aggression between Canada Geese and Greylag Geese when nesting together on islands off the Swedish coast, but found no evidence of negative effects on the numbers of breeding pairs of either species. Master & Oplinger (1984), on the other hand, suggested that Mallard Anas plathyrhynchos productivity in the eastern United States may be negatively affected by increasing nesting densities of Canada Geese (Hughes et al 1999).…”

Section: Discussionmentioning

confidence: 99%

Status and trends of the Canada Goose Branta canadensis in France

Fouque¹,

Schricke²

2011

Ornis Svec

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An enquiry to determine the distribution and abundance of the Canada Goose Branta candensis in France was undertaken in 2008. Responses were received from 92 out of the 96 departments. Canada Geese were reported in 56 of the 92 departments, in 8 of which the species had only appeared after 2000. For half of the 56 departments, the species was observed only in summer. Canada Geese summered in 38 departments, numbering at least 4,250 birds. At least 6,000 birds are also thought to winter in France as of 2008/2009, when the species is more widespread. Winter numbers are increasing exponentially. In 5 departments, crop damage and public health issues have resulted in local management measures in the last 3 years (e.g. egg pricking and culling of adults). We discuss the need for further regulation and legislation in the light of these conflicts and hybridisation with other species.

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“…The most common wild hybirds are Canada Geese × Greylag Geese (Ottenburghs et al, 2016). Canada Geese are larger than Greylag Geese, and while they display greater levels of intraspecies aggression at nest sites, attacks on Greylag Geese do occur, with evidence suggesting that they can prevent their nesting (Fabricius et al, 1974). This could be due to Greylag Geese performing both inter-and intraspecies nest parasitism (Beauchamp, 1998;Ottenburghs et al, 2016).…”

Section: Negative Impactsmentioning

confidence: 99%

Invasive birds: global trends and impacts

2020

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This 381-paged book covers the biology, ecology, impact and management of 34 common alien invasive species, with reviews on the history and context of avian introductions and invasions in five major regions (Oceania, Africa, Europe (including the Middle East, Asia and South America)), as well as management challenges and the potential of citizen science for monitoring alien birds. The book pitches at the introductory level and is ideal for readers to gain a quick and comprehensive view of the current status of global avian invasions. It has brought the records and research of avian invasion one step ahead of other alien invasive animal taxa. Many chapters contain distribution maps and data tables on the diet and morphology of the species, providing a good reference for the species and its management issues. Each chapter also contains a rich list of references that could help readers dive further into the topic.

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Intra- and Interspecific Territorialism in Mixed Colonies of the Canada Goose Branta canadensis and the Greylag Goose Anser anser

Cited by 10 publications

References 0 publications

Study of the breeding ecology and behaviour of the Svalbard population of Light-bellied Brent Goose Branta bernicla hrota

Study of the breeding ecology and behaviour of the Svalbard population of Light-bellied Brent Goose Branta bernicla hrota

Status and trends of the Canada Goose Branta canadensis in France

Invasive birds: global trends and impacts

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