Editorial: Behavioural and Ecological Consequences of Urban Life in Birds

Isaksson, Caroline; Rodewald, Amanda D.; Gil, Diego

doi:10.3389/fevo.2018.00050

Cited by 23 publications

(21 citation statements)

References 10 publications

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“…However, it is noteworthy for this study that we did not sample these birds at the time when they develop their bright coloration (which occurs during molt from July-September), so a follow-up study would be useful to examine glucose levels alongside mitochondrial activity and development of ornamental coloration. Moreover, the urban environment is thought to exert pervasive impacts on avian traits often linked to hyperglycemia (e.g., diet, movement patterns, health state; Isakkson, Rodewald & Gil, 2018), and in great tit nestlings, urban birds circulate more glucose than rural birds (Gladalski et al, 2018). Perhaps, due to seasonal glucose variation (Remage-Healey & Romero, 2000) and to oft-detected environmental effects on glucose in nestling birds (Kalinski et al, 2014;Lill, 2011), future studies may uncover more complex season-(e.g., breeding), age-, and site-related variation in glucose circulation in house finches.…”

Section: Discussionmentioning

confidence: 99%

Body condition and poxvirus infection predict circulating glucose levels in a colorful songbird that inhabits urban and rural environments

et al. 2020

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There is widespread contemporary interest in causes and consequences of blood glucose status in humans (e.g., links to diabetes and cardiovascular disease), but we know comparatively less about what underlies variation in glucose levels of wild animals. Several environmental factors, including diet, disease status, and habitat quality, may regulate glucose circulation, and we are in need of work that assesses many organismal traits simultaneously to understand the plasticity and predictability of glucose levels in ecological and evolutionary contexts. Here, we measured circulating glucose levels in a species of passerine bird (the house finch, Haemorhous mexicanus) that has served as a valuable model for research on sexual selection, disease, and urban behavioral ecology, as these animals display sexually dichromatic ornamental coloration, harbor many infectious diseases (e.g., poxvirus, coccidiosis, mycoplasmal conjunctivitis), and reside in both natural habitats and cities. We tested the effects of sex, habitat type, body condition, coccidiosis and poxvirus infections, and expression of carotenoid plumage coloration on blood glucose concentrations and found that the body condition and poxvirus infection significantly predicted circulating glucose levels. Specifically, birds with higher blood glucose levels had higher body condition scores and were infected with poxvirus. This result is consistent with biomedical, domesticated‐animal, and wildlife‐rehabilitation findings, and the premise that glucose elevation is a physiological response to or indicator of infection and relative body weight. The fact that we failed to find links between glucose and our other measurements suggests that blood glucose levels can reveal some but not all aspects of organismal or environmental quality.

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Section: Discussionmentioning

confidence: 99%

Body condition and poxvirus infection predict circulating glucose levels in a colorful songbird that inhabits urban and rural environments

et al. 2020

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“…Although urban and rural habitats differ across a variety of features (Garcia et al, 2017;Isaksson, Rodewald, & Gil, 2018), it has been suggested that differences in the availability and distribution of resources are particularly significant to avian communities (Chace & Walsh, 2006;Tryjanowski et al, 2015). Variation in the abundance and distribution of resources has been suggested to alter the formation and behavior of animal groups (Johnson, Kays, Blackwell, & Macdonald, 2002); higher abundance of resources in urban environments may thus cause changes to the structure of social groups and stability of individual's positions within those groups.…”

Section: Introductionmentioning

confidence: 99%

Urbanization and the temporal patterns of social networks and group foraging behaviors

Jones

Evans

Morand‐Ferron

2019

Ecology and Evolution

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Urbanization causes dramatic and rapid changes to natural environments, which can lead the animals inhabiting these habitats to adjust their behavioral responses. For social animals, urbanized environments may alter group social dynamics through modification of the external environment (e.g., resource distribution). This might lead to changes in how individuals associate or engage in group behaviors, which could alter the stability and characteristics of social groups. However, the potential impacts of urban habitat use, and of habitat characteristics in general, on the nature and stability of social associations remain poorly understood. Here, we quantify social networks and dynamics of group foraging behaviors of black‐capped chickadees ( N = 82, Poecile atricapillus ), at four urban and four rural sites weekly throughout the nonbreeding season using feeders with radio frequency identification of individual birds. Because anthropogenic food sources in urban habitats (e.g., bird feeders) provide abundant and reliable resources, we predicted that social foraging associations may be of less value in urban groups, and thus would be less consistent than in rural groups. Additionally, decreased variability of food resources in urban habitats could lead to more predictable foraging patterns (group size, foraging duration, and the distribution of foraging events) in contrast to rural habitats. Networks were found to be highly consistent through time in both urban and rural habitats. No significant difference was found in the temporal clumping of foraging events between habitats. However, as predicted, the repeatability of the clumping of foraging events in time was significantly higher in urban than rural habitats. Our results suggest that individuals living in urban areas have more consistent foraging behaviors throughout the nonbreeding season, whereas rural individuals adjust their tactics due to less predictable foraging conditions. This first examination of habitat‐related differences in the characteristics and consistency of social networks along an urbanization gradient suggests that anthropic habitat use results in subtle modifications in social foraging patterns. Future studies should examine potential implications of these differences for variation in predation risk, energy intake, and information flow.

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“…Especially in the study of human-bird relations, the specific context of human-shaped biomes may be of key importance. Urban, suburban and agricultural environments have indeed become critical habitats for many bird species (Marzluff 2001(Marzluff , 2014McKinney 2002McKinney , 2008Aronson et al 2014;Isaksson, Rodewald, and Gil 2018), some of which have developed behavioural, cognitive and physiological adaptations as a response to the specific requirements and challenges of living in these environments (e.g. Marzluff and Angell 2012; Gil and Brumm 2014).…”

Section: Towards a Conceptual Model Of Human-animal Relations: Triangmentioning

confidence: 99%

“…Marzluff and Angell 2012; Gil and Brumm 2014). The emerging field of 'urban avian ecology' deals with some of these consequences (Marzluff, Bowman, and Donnelly 2001;Gil and Brumm 2014;Isaksson, Rodewald, and Gil 2018).…”

Section: Towards a Conceptual Model Of Human-animal Relations: Triangmentioning

confidence: 99%

“…Anthropogenic spaces are attractive to birds because many of them offer shelter and nesting opportunities; they also provide new foraging possibilities or at least tend to increase the availability and predictability of relevant food sources (Isaksson, Rodewald, and Gil 2018). As a result, birds can be abundant in humanshaped environments, and some studies have even reported a positive correlation between hotspots of human population and bird richness (Luck et al 2010).…”

Section: Towards a Conceptual Model Of Human-animal Relations: Triangmentioning

confidence: 99%

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Archaeo-Ornithology: Towards an Archaeology of Human-Bird Interfaces

Kost

Hussain

2019

Environmental Archaeology

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This editorial introduces Archaeo-Ornithology as a distinct field of inquiry and discusses its multidisciplinary background and potential contribution to a more nuanced characterisation of changing human-animal interfaces through time and space. We propose a new conceptual modelgrounded in the analysis of 'triangles of interaction'to elucidate the interactional dynamics which underpin varying human-animal relationships. The utility of this approach is demonstrated by exploring the example of anthropogenic space as a key context of human-bird figurations. Each contributing paper of the special issue, which will be introduced in more detail below, foregrounds different aspects and emphasises varying dimensions of the triangle, thus contributing in different ways to archaeo-ornithological research. As highlighted throughout the introduction, however, archaeo-ornithological approaches are not only capable of shedding new light on old questions about the past, they also have the potential of addressing some pressing contemporary quandaries, including continuing debates on the Anthropocene.

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Editorial: Behavioural and Ecological Consequences of Urban Life in Birds

Cited by 23 publications

References 10 publications

Body condition and poxvirus infection predict circulating glucose levels in a colorful songbird that inhabits urban and rural environments

Body condition and poxvirus infection predict circulating glucose levels in a colorful songbird that inhabits urban and rural environments

Urbanization and the temporal patterns of social networks and group foraging behaviors

Archaeo-Ornithology: Towards an Archaeology of Human-Bird Interfaces

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