Restricted human activities shift the foraging strategies of feral pigeons (Columba livia) and three other commensal bird species. (Special Issue: Conservation and ecological impacts of the COVID-19 pandemic.)
Biological Conservation
; 253(78), 2021.
Article
in English
| CAB Abstracts | ID: covidwho-1797134
ABSTRACT
Invasive species are a growing concern with increasing global connectivity. Feral pigeons (Columba livia) are widespread and invasive, thus their effective control is of keen international interest. The COVID-19 pandemic has offered an unprecedented opportunity to investigate the impact of a nation-wide Circuit Breaker (restricted human activities) in Singapore on first, the abundance of the feral pigeons and three urban commensals-the Javan myna (Acridotheres javanicus), common myna (A. tristis), and house crow (Corvus splendens) in different food source types;and second, the activity budgets of feral pigeons. A significant and progressive decline in feral pigeon abundance was observed in open food centres and feeding hotspots after the Circuit Breaker was implemented. While the house crow and common myna were less affected, the Javan myna abundance increased moderately at refuse collection centres during the Circuit Breaker and decreased significantly in green spaces after the Circuit Breaker. Changes in food abundance could also predict changes in feral pigeon abundance and its effect was greatest in feeding hotspots. A greater proportion of feral pigeons was observed foraging and moving with a smaller proportion seen resting with probable consequences on their reproductive capacity. Our study also cautions against drawing inferences on biological responses due to similar social restrictions without careful consideration of other ecological factors, like average flock size and time of the day, which also affected the proportion of pigeons foraging on natural versus anthropogenic food. In summary, our results advocate a food limitation approach to control the feral pigeon populations.
Animal Ecology [ZZ332]; Biological Resources (Animal) [PP710]; Behaviour (Wild Animals) [YY500]; Prion, Viral, Bacterial and Fungal Pathogens of Humans [VV210]; wild birds; foraging; introduced species; invasive species; urban areas; human activity; flocks; coronavirus disease 2019; human diseases; viral diseases; animal ecology; wild animals; feral animals; pigeons; Acridotheres; Columba; Corvus splendens; Acridotheres tristis; Severe acute respiratory syndrome coronavirus 2; man; birds; Singapore; Columbidae; Columbiformes; vertebrates; Chordata; animals; eukaryotes; Sturnidae; Passeriformes; Corvus; Corvidae; APEC countries; ASEAN Countries; Commonwealth of Nations; high income countries; South East Asia; Asia; very high Human Development Index countries; Severe acute respiratory syndrome-related coronavirus; Betacoronavirus; Coronavirinae; Coronaviridae; Nidovirales; positive-sense ssRNA Viruses; ssRNA Viruses; RNA Viruses; viruses; Homo; Hominidae; primates; mammals; feral pigeons; Acridotheres javanicus; exotic organisms; exotic species; introduced organisms; non-indigenous organisms; non-indigenous species; non-native organisms; non-native species; nonindigenous organisms; nonindigenous species; invasive organisms; invasives; Indian myna; common myna; SARS-CoV-2; viral infections
Full text:
Available
Collection:
Databases of international organizations
Database:
CAB Abstracts
Type of study:
Experimental Studies
Language:
English
Journal:
Biological Conservation
Year:
2021
Document Type:
Article
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