The distribution and ecology of naturalized Egyptian Geese<i>Alopochen aegyptiacus</i>in Britain

Sutherland, William J.; Allport, Gary

doi:10.1080/00063659109477080

Cited by 11 publications

(18 citation statements)

References 1 publication

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“…During their study, Sutherland & Allport 6 found an average of about 1.0 fledged young per pair, whereas in The Netherlands birds fledged nearly 2.0 young ( Table 2). This can make the difference between the rapid growing population in The Netherlands and a more or less stable population in Britain.…”

Section: Breeding Resultsmentioning

confidence: 99%

“…In Britain, as well as The Netherlands, most breeding attempts are found in sites with short grass for chicks to graze, open water for protection of the young and a suitable nest-site such as islands, old trees with holes or epicormic shoots. 5,6 The reasons for the differences in breeding success could lay in climatological differences between the areas, differing predation rates or genetic differences between the two feral populations.…”

Section: Breeding Resultsmentioning

confidence: 99%

“…For the independent variables beta is given; *significant at P < 0.05. sites. 5,6 Along the rivers in The Netherlands, the population of Egyptian Geese has increased since 1976 (Fig. 8).…”

Section: Non-breedingmentioning

confidence: 99%

“…7 Since the 18th century, the species has bred in the wild in Great Britain, the more or less stable population of 125 pairs centred mainly in Norfolk. 6,8 Since 1988, the numbers have increased, mainly through colonization of nearby Suffolk. 9,10 On the continent, feral breeding was first observed near The Hague (The Netherlands) in 1967.…”

mentioning

confidence: 99%

“…[2][3][4] Despite the differences in climate compared with Africa, the species shows no regular migration within Europe. 5,6 The species was introduced to Europe more than two centuries ago as an ornamental waterbird. 7 Since the 18th century, the species has bred in the wild in Great Britain, the more or less stable population of 125 pairs centred mainly in Norfolk.…”

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confidence: 99%

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Aspects of the biology of Egyptian GooseAlopochen aegyptiacuscolonizing The Netherlands

Lensink¹

1999

Bird Study

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Section: Breeding Resultsmentioning

confidence: 99%

Section: Breeding Resultsmentioning

confidence: 99%

“…For the independent variables beta is given; *significant at P < 0.05. sites. 5,6 Along the rivers in The Netherlands, the population of Egyptian Geese has increased since 1976 (Fig. 8).…”

Section: Non-breedingmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Aspects of the biology of Egyptian GooseAlopochen aegyptiacuscolonizing The Netherlands

Lensink¹

1999

Bird Study

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South Africa as a Donor of Alien Animals

Measey

Robinson

Kruger

et al. 2020

Biological Invasions in South Africa

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This review provides the first assessment of animal species that are native to South Africa and invasive elsewhere in the world. While around a twelfth of all naturalised plants in the world are native to South Africa, there are very few examples of South African native marine, terrestrial, or freshwater animals becoming invasive elsewhere. We provide a narrative of each of the 34 cases that we could find. Three of these species, the Common Waxbill, Estrilda astrild, the Mozambique Tilapia, Oreochromis mossambicus and the African Clawed Frog, Xenopus laevis, were widely traded, and introduced on several continents with invasive populations becoming the subject of substantial research. Most other species are poorly documented in the literature such that it is often not known whether South African populations are the source of invasions. These species demonstrate the same trend in pathways of animals entering South Africa, moving from deliberate to accidental through time. The role of mavericks, individuals whose deliberate actions wilfully facilitate invasions, is highlighted. While South Africa has acted as an important bridgehead for the invasions of forestry pests, crayfish, fish and amphibians on the continent, it is clearly not a major donor of animal invasions, but rather a recipient. This could be due to South African ecosystems being fundamentally more invasible, or South African fauna showing reduced invasiveness, though it is likely that substantial differences in historical pathways also played a crucial role.

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Temporal and spatial expansion of the Egyptian goose Alopochen aegyptiacus in The Netherlands, 1967–94

Lensink

1998

Journal of Biogeography

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In this paper, the temporal and spatial expansion of the Egyptian goose in the Netherlands are described and analysed. The species bred near The Hague for the first time in 1967. In 1983 a second settlement developed in Drenthe. Both settlements expanded. Together, they contained about 1340 breeding pairs in 1994. For both settlements a linear relationship exists between the square root of the area occupied and time. In both cases, population growth is exponential. The bird behaves as a resident species. Thus, in winter numbers in The Netherlands also increase exponentially. The Egyptian goose seems to be sensitive to severe winters, which cause a high mortality. The observed velocity of range expansion is compared with the velocity as calculated with the expansion model of Van den Bosch et al. (1990). The observed velocity was about 3.0 km per year, which is about 20% lower than expected, but not significantly different. Population growth was estimated using a projection matrix. In the first 10 years after its settlement near The Hague, the actual population growth was larger than the calculated growth. There is evidence for good breeding success during the first years due to mild winters between 1972 and 1978. In the second settlement, Drenthe, the same rapid population growth occurred. Here, a low but regular influx of birds from a nearby city park was probably the main factor. In the near future, further temporal and spatial expansion can be expected, in the direction of Germany and Denmark in the east and Belgium and France in the south. Towards the east the severity of the winters might limit further range expansion, possibly coinciding with the 0o isotherm in January.

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The distribution and ecology of naturalized Egyptian GeeseAlopochen aegyptiacusin Britain

Cited by 11 publications

References 1 publication

Aspects of the biology of Egyptian GooseAlopochen aegyptiacuscolonizing The Netherlands

Aspects of the biology of Egyptian GooseAlopochen aegyptiacuscolonizing The Netherlands

South Africa as a Donor of Alien Animals

Temporal and spatial expansion of the Egyptian goose Alopochen aegyptiacus in The Netherlands, 1967–94

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