Guided by the light: Roost choice and behaviour of urban Rainbow Lorikeets (Trichoglossus haematodus)

Daoud-Opit, Savannah; Jones, Darryl

doi:10.1515/eje-2016-0008

Cited by 6 publications

(2 citation statements)

References 27 publications

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“…Changing or reducing artificial light can discourage birds from settling in areas where they pose a danger or nuisance to humans. For example, three studies in our map showed how artificial light levels can influence roost site selection for nuisance species in urban environments [119][120][121]. Another study changed the colour of runway lighting to reduce insect attraction, thereby reducing the number of birds on the runway [122].…”

Section: What Evidence Exists On Continuous Artificial Illumination C...mentioning

confidence: 98%

Effects of artificial light on bird movement and distribution: a systematic map

et al. 2021

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Background Artificial light is ubiquitous in the built environment with many known or suspected impacts on birds. Birds flying at night are known to aggregate around artificial light and collide with illuminated objects, which may result from attraction and/or disorientation. In other contexts, birds are repelled by light-based deterrents, including lasers and spotlights. Artificial light can also change birds’ perceptions of habitat quality, resulting in selection or avoidance of illuminated areas. Studies documenting aggregation, deterrence, and habitat selection are typically considered separate literature bodies, but they actually study a common set of populations, interventions/exposures, and responses. Our systematic map provides a comprehensive, searchable database of evidence of the effects of artificial light on bird movement and distribution, increasing both the quantity and diversity of studies that are accessible for further comparison and synthesis. We identify and describe the evidence available for four secondary questions relevant to conservation or management: aggregation/mortality at structures with artificial lights, evidence that light attracts and/or disorients birds, light-based deterrent efficacy, and the influence of continuous illumination on habitat selection. Methods Using the principles of systematic reviews and methods published in an earlier protocol, we conducted an extensive and interdisciplinary literature search. We searched multidisciplinary citation indices as well as databases and websites specific to conservation, pest management, transportation, and energy. In our map, we included all studies reporting eligible populations (birds), interventions/exposures (artificial light), and outcomes (movement through space, behaviour preceding movement, or distribution). We evaluated the quantity of available evidence based on meta-data fields related to study context, population traits, light source characteristics, and outcome variables. We used these meta-data to identify relevant evidence for each secondary question and describe aspects of our secondary questions that may support reviews (evidence clusters) and others that require more research (knowledge gaps). Review findings We manually screened 26,208 articles and coded meta-data for 490 eligible studies in a searchable database, organizing the literature to facilitate future reviews and evidence-based management. Much of the evidence was concentrated in particular locations (Northern hemisphere), taxonomic orders (Passeriformes, Charadriiformes, and others), and light wavelengths (red and white). We identified 56 distinct response variables and organized them into 3 categories (behaviour, distribution, and avian community), showing the diversity in bird responses to light. Conclusions Our database can be used to answer the secondary questions we identified and other questions about the effects of artificial light on bird movement and resulting changes to distribution. There may be sufficient evidence for a review of the weather and lunar conditions associated with collisions, which could help identify nights when reduction of artificial light is most important. Further experiments should investigate whether specific types of light can reduce collisions by increasing the detectability of structures with artificial lights. The efficacy of lasers as deterrents could be evaluated through systematic review, though more studies are needed for UV/violet lasers. To reduce the impacts of outdoor lighting on birds, research should investigate how spectral composition of white light influences bird attraction, orientation, and habitat selection.

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Section: What Evidence Exists On Continuous Artificial Illumination C...mentioning

confidence: 98%

Effects of artificial light on bird movement and distribution: a systematic map

et al. 2021

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“…In addition to facilitating range expansions, urbanization is altering the abundance of cavity nesters. Species such as the rainbow lorikeet, are well adapted to make use of nectar resources available in many planted urban plants and trees, has increased in abundance following the expansion of urban areas along the east coast and is invasive in cities in Western Australia and Tasmania where it is introduced (Shukuroglou & McCarthy, 2006;Koch et al, 2008;Daoud-opit & Jones, 2016). However, the addition of many novel species to urban cavity breeding assemblages remains little understood.…”

Section: Urban Environments In Australiamentioning

confidence: 99%

The role of habitat variability and interactions around nesting cavities in shaping urban bird communities

Rogers¹

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Aim: To examine how gradients of disturbance (invasion and urbanization) change bird community composition. Location: Eastern Australia Methods: We surveyed avian communities along gradients of invasion at landscape scales (long invaded vs. recently invaded areas) and along local gradients of urbanization (edge, open parks, and urban sub-environments) in New South Wales (NSW) and Queensland (QLD), Australia. Species richness and abundance was calculated for urban sub-environments, and for long and recently invaded areas. We also examined species presence across all sites for each region to evaluate more generally whether individual species were urban exploiters, adapters or avoiders. Results: In total, across nine sites, and 27 sub-environments, we surveyed 127 species in NSW and 144 species in QLD. Most species are urban adapters making some use of some or all urban sub-environments (NSW 83, QLD 84). Edge sites had the highest number of species that did not occur in either urban or park sites (urban avoiders: NSW 23, QLD 31). The lowest richness was found in the most urban sites (urban exploiters; NSW 10, QLD 15). We found that more urban sub-environments contained fewer species, while abundance did not differ. We found little influence of invasive species in shaping urban bird communities. Across urban environments, we found that the presence of an aggressive native species and habitat structure influenced species richness within cities significantly (negative and positive relationships respectively). Main conclusions: Vegetation structure in urban habitats was found to be important for many species, even in the presence of aggressive despotic and invasive alien species. Increasing vegetation structure provides more hiding spaces for small birds in the face of abundant aggressive urban-adapted species. The majority of birds in our surveys are urban adapters such that urban conservation efforts have the opportunity to benefit diverse bird communities.

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