Urban bird feeders dominated by a few species and individuals

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dc.contributor.author Galbraith, JA en
dc.contributor.author Jones, DN en
dc.contributor.author Beggs, Jacqueline en
dc.contributor.author Parry, K en
dc.contributor.author Stanley, Margaret en
dc.date.accessioned 2018-11-06T21:48:08Z en
dc.date.issued 2017 en
dc.identifier.citation Frontiers in Ecology and Evolution 5: Article number 81 02 Aug 2017 en
dc.identifier.issn 2296-701X en
dc.identifier.uri http://hdl.handle.net/2292/44048 en
dc.description.abstract The practice of garden bird feeding is a global phenomenon, involving millions of people and vast quantities of food annually. Many people engage in the practice of feeding assuming that birds gain some benefit from the food they provide, yet recent studies have revealed the potential for detrimental impacts as well. However, there is still a paucity of information on the impacts of feeding, including the ubiquity of these impacts among and within feeder-visiting species. Consistency in feeder use among birds is likely an important determinant of this. Individual birds and species that make frequent use of feeders are more likely to experience both the benefits and detrimental impacts of supplementary food. We investigated patterns of feeder use by garden birds visiting experimental feeding stations in Auckland, New Zealand, with the specific aim of determining whether use of supplementary food was consistent or variable among individuals and species. We used camera traps as well as Radio Frequency Identification (RFID) technology to examine intra- and interspecific feeder visitation patterns and to discern species associations. Eleven bird species were detected using feeding stations, however, two introduced species (house sparrow Passer domesticus and spotted dove Streptopelia chinensis) dominated visitation events. These species were present at feeders most frequently, with the largest conspecific group sizes. Significant associations were detected among a number of species, suggesting interspecific interactions are important in determining feeder use. We also found within-species differences in feeder use for all focal species, with individual variation greatest in house sparrows. Furthermore, season had an important influence on most visitation parameters. The observed individual and species-specific differences in supplementary food resource use imply that the impacts of garden bird feeding are not universal. Crucially, particularly given the avifaunal context in New Zealand, resource dominance by introduced species could have potential negative outcomes for native species conservation in cities. en
dc.relation.ispartofseries Frontiers in Ecology and Evolution en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Urban bird feeders dominated by a few species and individuals en
dc.type Journal Article en
dc.identifier.doi 10.3389/fevo.2017.00081 en
pubs.volume 5 en
dc.rights.holder Copyright: The authors en
pubs.author-url http://journal.frontiersin.org/article/10.3389/fevo.2017.00081/full en
dc.rights.accessrights http://purl.org/eprint/accessRights/OpenAccess en
pubs.subtype Article en
pubs.elements-id 648792 en
pubs.org-id Science en
pubs.org-id Biological Sciences en
pubs.number 81 en
pubs.record-created-at-source-date 2017-08-15 en

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