Supplemental feeding may reduce responsiveness of Black-capped Chickadees (Poecile atricapillus) to avian mobbing calls during gap-crossing experiments DOI
Jacob Bailey, Matthew W. Reudink, Ken A. Otter

et al.

Canadian Journal of Zoology, Journal Year: 2019, Volume and Issue: 97(8), P. 680 - 684

Published: May 2, 2019

Deforestation creates gaps in forest habitat, which can limit the movements of many avian species. Increased predation risk associated with crossing open habitats is often considered primary impediment to gaps. However, other factors such as energetic reserves may also influence these decisions. We conducted playback experiments before and after supplemental feeding Black-capped Chickadees (Poecile atricapillus (Linnaeus, 1766)) investigate how influenced gap-crossing were less likely respond playbacks, whether within forests or across gaps, feeding. This suggests that have on decisions than willingness birds mobbing calls general. recommend future studies investigating using playbacks account for differences resource availability among sampling locations, especially when making comparisons discrete habitats.

Language: Английский

Age, sex and temperature shape off-territory feeder use in black-capped chickadees DOI Creative Commons
Megan LaRocque, Jan J. Wijmenga, Kimberley J. Mathot

et al.

Behavioral Ecology, Journal Year: 2024, Volume and Issue: 35(6)

Published: Oct. 3, 2024

Abstract Spatial ecology tends to focus on average movement patterns within animal groups; however, recent studies highlight the value of considering decisions both and among individuals. We used a marked population black-capped chickadees (Poecile atricapillus), assess causes consequences within- among-individual differences in chickadee space use. Individuals that feeders addition their most-visited “core feeder” were defined as engaging off-territory feeder found females more likely than males visit ambient temperatures decrease energetic demands increase. This may be due sex-related dominance, where which are dominant sex chickadees, have priority access feeders, while must increase foraging areas meet higher demand. also independent temperature, adult less juvenile forage off-territory. suggest this age-specific benefits use males, un-paired exploration gain information about potential mates. Finally, we had propensity survive next fall. Overall, our results dominance hierarchies individual energetics impact variation provide suggestions for future further investigate fitness-related

Language: Английский

Citations

4
feedr and animalnexus.ca: A paired R package and user‐friendly Web application for transforming and visualizing animal movement data from static stations DOI Creative Commons
Steffi LaZerte, Matthew W. Reudink, Ken A. Otter

et al.

Ecology and Evolution, Journal Year: 2017, Volume and Issue: 7(19), P. 7884 - 7896

Published: Aug. 30, 2017

Abstract Radio frequency identification ( RFID ) provides a simple and inexpensive approach for examining the movements of tagged animals, which can provide information on species behavior ecology, such as habitat/resource use social interactions. In addition, tracking animal is appealing to naturalists, citizen scientists, general public thus represents tool engagement in science education. Although useful tool, large amount data collected using may quickly become overwhelming. Here, we present an R package feedr have developed loading, transforming, visualizing time‐stamped, georeferenced data, from static logger stations. Using our package, be transformed raw visits, presence (regular detections by over time), between loggers, displacements, activity patterns. several conversion functions allow users format other complementary packages. Data also visualized through or interactive maps animations time. To increase accessibility, either directly, companion site: http://animalnexus.ca , online, user‐friendly, R‐based Shiny Web application. This system used professional scientists alike view study movements. We designed this flexible able handle stationary sources (e.g., hair traps, very high VHF telemetry observations marked individuals colonies staging sites), hope framework will meeting point science, education, community awareness animals. aim inspire while simultaneously enabling robust scientific analysis.

Language: Английский

Citations

12
No effect of passive integrated transponder tagging method on survival or body condition in a northern population of Black‐capped Chickadees (Poecile atricapillus) DOI Creative Commons
Jonathan James Farr, Elène Haave‐Audet, Peter R. Thompson

et al.

Ecology and Evolution, Journal Year: 2021, Volume and Issue: 11(14), P. 9610 - 9620

Published: June 20, 2021

Abstract Passive integrated transponder (PIT) tags allow a range of individual‐level data to be collected passively and have become commonly used technology in many avian studies. Although the potential adverse effects PIT been evaluated several species, explicit investigations their impacts on small (<12 g) birds are limited. This is important, because it reasonable expect that smaller could impacted more strongly by application tags. In this study, we individually marked Black‐capped Chickadees ( Poecile atricapillus ), (circa 10 passerine, at University Alberta Botanic Garden evaluate lethal sublethal two tagging methods: attachment leg bands or subcutaneous implantation. We Cox proportional hazards model compare apparent survival chickadees with band N = 79) implanted 77) compared control received no 76) over subsequent 2 years based mist net recaptures. radio‐frequency identification (RFID) redetections sex‐specific increase accuracy our estimates. also generalized linear regression body condition recaptured after overwintering tags, neither. Our analysis found evidence for either method condition. While recommend carefully monitoring study animals evaluating efficacy different methods, shown both subcutaneously ethical means obtaining individualized information passerine.

Language: Английский

Citations

10
Consistency in supplemental food availability affects the space use of wintering birds DOI
Rachael P. Mady, Wesley M. Hochachka, David N. Bonter

et al.

Behavioral Ecology, Journal Year: 2021, Volume and Issue: 32(4), P. 580 - 589

Published: Jan. 20, 2021

Abstract Across the globe, millions of people feed wild birds and this practice has profound implications for many bird species. To better understand effects supplemental feeding, researchers have compared with access to inexhaustible food those without access. However, consistency availability varies peoples’ provisioning habits because some fill their feeders daily, while others do so sporadically. As changes, a bird’s foraging strategy, including its use space, should change. determine how space availability, we surveyed three species experimental that provided constant, pulsed, or no food. We conducted these surveys at two locations—near far from feeder—within nine sites differences in among within sites. Access food, regardless feeding regime, anchored movements each near feeders. different regimes had on use. Birds constant were continually feeders, pulsed temporarily In one (black-capped chickadee), concentrated larger numbers when was available Supplemental act as spatial anchors but ways across potentially varying survival population dynamics.

Language: Английский

Citations

8
Pairing automated mark–recapture and social network models to explore the effects of landscape configuration on hummingbird foraging patterns DOI Open Access
Dustin Gannon, Adam S. Hadley, Sarah J. K. Frey

et al.

Biology Letters, Journal Year: 2021, Volume and Issue: 17(8), P. 20210188 - 20210188

Published: Aug. 1, 2021

Landscape changes can alter pollinator movement and foraging patterns which in turn influence the demographic processes of plant populations. We leveraged social network models four fixed arrays five hummingbird feeders equipped with radio frequency identification (RFID) data loggers to study rufous ( Selasphorus rufus ) a heterogeneous landscape. Using space-for-time approach, we asked whether forest encroachment on alpine meadows could restrict movements impede resource discovery. fit 2221 between made by 29 hummingbirds. Movements were primarily females, likely due male territoriality early migration dates. Distance was driving factor determining rate among feeders. The posterior mean effects landscape variables (local canopy cover intervening cover) negative, but considerable uncertainty. Finally, found strong reciprocity movements, indicative frequent out back resources. Together, these findings suggest that reciprocal female hummingbirds help maintain bidirectional gene flow nearby subpopulations ornithophilous plants; however, if distance increases further encroachment, this may limit progressively isolated meadows.

Language: Английский

Citations

3
Supplemental feeding may reduce responsiveness of Black-capped Chickadees (Poecile atricapillus) to avian mobbing calls during gap-crossing experiments DOI
Jacob Bailey, Matthew W. Reudink, Ken A. Otter

et al.

Canadian Journal of Zoology, Journal Year: 2019, Volume and Issue: 97(8), P. 680 - 684

Published: May 2, 2019

Deforestation creates gaps in forest habitat, which can limit the movements of many avian species. Increased predation risk associated with crossing open habitats is often considered primary impediment to gaps. However, other factors such as energetic reserves may also influence these decisions. We conducted playback experiments before and after supplemental feeding Black-capped Chickadees (Poecile atricapillus (Linnaeus, 1766)) investigate how influenced gap-crossing were less likely respond playbacks, whether within forests or across gaps, feeding. This suggests that have on decisions than willingness birds mobbing calls general. recommend future studies investigating using playbacks account for differences resource availability among sampling locations, especially when making comparisons discrete habitats.

Language: Английский

Citations

0