Brent Goose - Branta bernicla
( Linnaeus, 1758 )

 

 

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Subspecies: Unknown
Est. World Population: 198000-225000,211000

CITES Status: NOT LISTED
IUCN Status: Least Concern
U.S. ESA Status: NOT LISTED

Body Length:
Tail Length:
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Top Speed:
Jumping Ability: (Horizontal)

Life Span: in the Wild
Life Span: in Captivity

Sexual Maturity: (Females)
Sexual Maturity: (Males)
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Habitat:
The species breeds in coastal Arctic tundra (Carboneras et al. 2014) in or close to wet coastal meadows with abundant grassy vegetation (Kear 2005) and on tundra-covered flats with tidal streams (only just above the high tide line). In some parts of its range it shows a preference for nesting on small grassy islands (Johnsgard 1978) in tundra lakes and rivers. High Arctic nesters may also breed widely dispersed over icy tundra, well-away from water (Kear 2005). Outside of the breeding season the species becomes predominantly coastal, inhabiting estuaries, sandy shores (Carboneras et al. 2014), tidal mudlflats (Madge and Burn 1988), coastal saltmarshes, and shallow muddy bays (Kear 2005). In recent years the species has taken to grazing on coastal cultivated grasslands (Madge and Burn 1988) and winter cereal fields (Scott and Rose 1996), but rarely occurs on freshwater wetlands except on passage. It arrives on the breeding grounds in early June where it may breed in small, loose colonies (Madge and Burn 1988) or dispersed in single pairs (Snow and Perrins 1998). The nest is a shallow depression on the ground. Although the species often nests close to water (Carboneras et al. 2014) typically within a few hundred metres of the tideline (Snow and Perrins 1998), high Arctic nesters may breed on icy tundra well away from water (Kear 2005). Clutch size is typically three to five eggs. The species is mainly herbivorous although it may take animal matter. In its breeding habitat the diet of the species generally consists of grasses, mosses, lichens and aquatic plants (Carboneras et al. 2014), although the young may also take insects and aquatic invertebrates (Johnsgard 1978). Breeding success is highly dependent on the lemming cycle. Effectively only once every three years (the lemming peak years) is breeding success relatively high. Outside of the breeding season the species predominantly takes marine algae, seaweeds and other aquatic plants linked with salt or brackish water (Carboneras et al. 2014). This species is fully migratory, the main routes of migration being along Arctic coastlines (Snow and Perrins 1998).

Although the generation length for both EU and Europe regional assessments were calculated using the same methodology, new information arriving after the EU assessments were undertaken gave rise to an update in the generation lengths. This new information was then used for the Europe level assessments giving rise to a difference between the generation lengths used for the EU and Europe regions.

Range:
In Europe, this species breeds primarily in Svalbard and Jan Mayen, with smaller populations also present in Greenland and Russia.
It winters largely in France and the United Kingdom, and also notably in the Netherlands and Ireland.

Conservation:
Conservation Actions Underway
CMS Appendix II. EU Birds Directive Annex II. In England and the Netherlands alternative feeding sites have been established to prevent conflict with agriculture. Dutch farmers who suffer damage from geese are paid compensation and in the German Wadden Sea farmers are subsidized to accept foraging geese (Tucker and Heath 1994).

Conservation Actions Proposed
International management plan including policies on crop damage and shooting should be agreed upon (Tucker and Heath 1994). An assessment of methods of predator control in Svalbard should be undertaken. Alternative feeding sites should continue to be provided.

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