Nest success of the Indian House Crow <i>Corvus splendens</i>: an urban invasive bird species in Dar es Salaam, Tanzania

Shimba, Moses Joel; Jonah, Fredrick Ekow

doi:10.2989/00306525.2016.1223766

Cited by 5 publications

(15 citation statements)

References 3 publications

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“…For example, the airstrike damage by mallard ducks was estimated at over US$100 million, and about US$200,000 was spent in clean-up costs associated with common starlings in Omaha, Nebraska, USA (Linz et al 2007;Cummings 2016). Species such as the house crow and the rock dove have been reported to pollute various anthropogenic infrastructure and water bodies with their excreta (Xi 2009;Sacchi et al 2002;Jerolmack 2008;Shimba and Jonah 2017) resulting in more financial expenditure. For example, in the USA alone, feral pigeons in some urban areas have caused impacts of * US$1.1 million annually (Pimentel et al 2005).…”

Section: Impact Assessmentmentioning

confidence: 99%

“…The impacts on forest production by these seven species were relatively low because most of the alien invasive bird species examined have adapted to live, roost, and feed on food around human habitation. This included species such as the common starling (Mennechez and Clergeau 2001), house crow (Shimba and Jonah 2017), rock dove (Spennemann and Watson 2017), and house sparrow (Magudu and Downs 2015).…”

Section: Impact Assessmentmentioning

confidence: 99%

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Impact assessment of seven alien invasive bird species already introduced to South Africa

Shivambu

Downs

2020

Biol Invasions

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Globally, various avian species have been introduced accidentally and deliberately by humans through different pathways. Some of these species were able to establish, multiply, and become invasive. In this study, we identified areas that are climatically suitable for seven introduced invasive bird species and assessed the environmental and socio-economic impacts associated with the selected bird species in South Africa. We used present distribution records to predict potential climatic suitability distributions and used the Generic Impact Scoring Scheme to assess the impacts associated with seven invasive bird species in South Africa. We found that all the seven species were climatically suitable to South Africa and Passer domesticus, Sturnus vulgaris, and Anas platyrhynchos each had relatively large climatic suitability distributions. The climatic suitability for all the species was within their occurrence ranges in and outside South Africa. For impact assessments, we found that all seven selected species had impacts, with A. platyrhynchos, Acridotheres tristis, Columba livia, and Psittacula krameri having the highest overall impacts respectively. The socio-economic impact ranked higher than environmental impact for all species. The socio-economic impacts were frequently through agricultural production and human infrastructure, while the environmental impact was mostly through impacts of birds on other animals and competition. These need to be incorporated in decision-making and eradication plans for these alien invasive birds in South Africa.Keywords Alien invasive birds Á Climatic matching Á GISS Á Environmental impact Á Socioeconomic impacts Á Impact assessment

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Section: Impact Assessmentmentioning

confidence: 99%

Section: Impact Assessmentmentioning

confidence: 99%

Impact assessment of seven alien invasive bird species already introduced to South Africa

Shivambu

Downs

2020

Biol Invasions

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“…This species is regarded as one of the world's worst invasive species, established in approximately 25 countries (Suliman et al, 2011). It is reported to be invasive in countries such as Hong Kong , Singapore (Brook et al, 2003), Ismailia Governorate, Egypt (Kamel, 2014), Tanzania (Shimba and Jonah, 2016) and South Africa (Nxele and Shivambu, 2018). In its native Pakistan (Khan, 2003) and India (Dhindsa et al, 1991), it is regarded as a native invasive pest species.…”

Section: Distributionmentioning

confidence: 99%

“…The House Crow invaded range includes the following Brook et al, 2003;Ottens and Ryall, 2003;Ottens, 2003;Suliman et al, 2011;Kamel, 2014;Shimba and Jonah, 2016;Nxele and Shivambu, 2018)…”

Section: Distributionmentioning

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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“…Across Africa, how bird species are responding to urbanisation and associated threats and opportunities, is very mixed: population declines for Hooded Vulture Necrosyrtes monachus (Mullié et al 2017), dietary adaptation for Crowned Eagle Stephanoaetus coronatus (McPherson et al 2015;van der Meer et al 2018), earlier breeding for Marabou Stork Leptoptilos crumenifer (Pomeroy and Kibuule 2017) and Peregrine Falcon Falco peregrinus (Sumasgutner et al 2020) and facilitation of the alien urban invader the Indian House Crow Corvus splendens (Shimba and Jonah 2017), are some examples of the numerous varied responses. Additionally, Chamberlain et al (2018) showed long-term changes in bird functional feeding guilds in response to an urban gradient in Kampala, Uganda, where insectivores and granivores were found to have declined, whereas the most common predators and scavengers benefitted from the inability of municipal waste management to keep pace with growth from the human population, hence providing more potential food resources.…”

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confidence: 99%

Urban areas have lower species richness, but maintain functional diversity: insights from the African Bird Atlas Project

Lee

Ottosson

Jackson

et al. 2021

Ostrich

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High human population growth and rapid urbanisation, particularly in Africa, have led to an increased interest in the impacts of this land-use change on bird communities. The African Bird Atlas Project, where species presence lists are collected in pentads, is a valuable source of data with which to explore the extent of these impacts. Here, for the first-time, we test for differences in species richness patterns across 50 matched pentad pairs from sub-Saharan Africa classified as either urban (or semi-urban) and rural. We found that species richness was lowest in pentads classified as urban (mean ± SD: 132 ± 59 species), compared with rural (172 ± 54). However, species richness was similar, compared with rural pentads, when levels of urbanisation were maintained at intermediate levels (semi-urban: 141 ± 69). Surprisingly, we found no significant differences in functional diversity measures between any land-use categories. Across most major dietary guilds (carnivores, herbivores, insectivores, granivores) species richness was lower in urbanised pentads and species were often small. However, the overall biomass of these guilds was similar between urbanised and non-urbanised areas, indicating the presence of common urban exploiter species. This resulted in no differences in functional diversity overall. Pollinators and piscivores showed little difference in metrics between rural and urban pentads. According to a model of the functional traits we consider, an African urban exploiter species is best described by being a scavenger, and less likely to be a habitat specialist, but fill a variety of niches. The urban spatial planning implications are that rare and range-restricted species in proximity to cities, as well as large bird species, will require particular attention and conservation measures as African cities continue to expand. Species richness could be maintained with intermediate levels of urban infrastructure development. Les zones urbaniséessont moins riches en espèces mais conservent une diversité fonctionnelle: un aperçu du projet d'Atlas des oiseaux d'Afrique La forte croissance de la population humaine et l'urbanisation rapide, plus particulièrement en Afrique, ont suscité un intérêt accru sur les impacts de ce changement d'utilisation des terres sur les communautés aviaires. Le projet d'Atlas des oiseaux d'Afrique, qui collecte les données relatives à la présence des espèces au travers de pentades (groupe de cinq unités), est un source précieuse de données permettant d'explorer l'étendue de ces impacts. Au travers de cet article, et pour la première fois, nous testons les différences en termes de richesse d'espèces, au travers de modèles basés sur 50 paires de pentades appariées d'Afrique sub-saharienne et classées comme urbaines (ou semi-urbains) ou rurales. Nous avons estimé que la richesse en espèces était la plus faible dans des pentades de catégorie urbaine (moyenne ± σ: 132 ± 59 espèces) par comparaison aux groupes ruraux (172 ± 54 espèces). Néanmoins, il a été constaté que la richesse en espèce...

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Nest success of the Indian House Crow Corvus splendens: an urban invasive bird species in Dar es Salaam, Tanzania

Cited by 5 publications

References 3 publications

Impact assessment of seven alien invasive bird species already introduced to South Africa

Impact assessment of seven alien invasive bird species already introduced to South Africa

Invasive birds: global trends and impacts

Urban areas have lower species richness, but maintain functional diversity: insights from the African Bird Atlas Project

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