KatznerTurkDuerrEtAl2015

Référence

Katzner, T.E., Turk, P.J., Duerr, A.E., Miller, T.A., Lanzone, M.J., Cooper, J.L., Brandes, D., Tremblay, J.A., Lemaître, J. (2015) Use of multiple modes of flight subsidy by a soaring terrestrial bird, the golden eagle Aquila chrysaetos, when on migration. Journal of the Royal Society Interface, 12(112). (Scopus )

Résumé

Large birds regularly use updrafts to subsidize flight. Although most research on soaring bird flight has focused on use of thermal updrafts, there is evidence suggesting that many species are likely to use multiple modes of subsidy. We tested the degree to which a large soaring species uses multiple modes of subsidy to provide insights into the decision-making that underlies flight behaviour. We statistically classified more than 22 000 global positioning satellite-global system for mobile communications telemetry points collected at 30-s intervals to identify the type of subsidized flight used by 32 migrating golden eagles during spring in eastern North America. Eagles used subsidized flight on 87% of their journey. They spent 41.9%±1.5 (x¯ ±s.e.m., range: 18-56%) of their subsidized northbound migration using thermal soaring, 45.2%±2.1 (12-65%) of time gliding between thermals, and 12.9%±2.2 (1-55%) of time using orographic updrafts. Golden eagles responded to the variable local-scale meteorological events they encountered by switching flight behaviour to take advantage of multiple modes of subsidy. Orographic soaring occurred more frequently in morning and evening, earlier in the migration season, andwhen crosswinds andtail windswere greatest.Switching between flight modes allowed migration for relatively longer periods each day and frequent switching behaviour has implications for a better understanding of avian flight behaviour and of the evolution of use of subsidy in flight. © 2015 The Author(s) Published by the Royal Society. All rights reserved.

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@ARTICLE { KatznerTurkDuerrEtAl2015,
    AUTHOR = { Katzner, T.E. and Turk, P.J. and Duerr, A.E. and Miller, T.A. and Lanzone, M.J. and Cooper, J.L. and Brandes, D. and Tremblay, J.A. and Lemaître, J. },
    JOURNAL = { Journal of the Royal Society Interface },
    TITLE = { Use of multiple modes of flight subsidy by a soaring terrestrial bird, the golden eagle Aquila chrysaetos, when on migration },
    YEAR = { 2015 },
    NOTE = { cited By 40 },
    NUMBER = { 112 },
    VOLUME = { 12 },
    ABSTRACT = { Large birds regularly use updrafts to subsidize flight. Although most research on soaring bird flight has focused on use of thermal updrafts, there is evidence suggesting that many species are likely to use multiple modes of subsidy. We tested the degree to which a large soaring species uses multiple modes of subsidy to provide insights into the decision-making that underlies flight behaviour. We statistically classified more than 22 000 global positioning satellite-global system for mobile communications telemetry points collected at 30-s intervals to identify the type of subsidized flight used by 32 migrating golden eagles during spring in eastern North America. Eagles used subsidized flight on 87% of their journey. They spent 41.9%±1.5 (x¯ ±s.e.m., range: 18-56%) of their subsidized northbound migration using thermal soaring, 45.2%±2.1 (12-65%) of time gliding between thermals, and 12.9%±2.2 (1-55%) of time using orographic updrafts. Golden eagles responded to the variable local-scale meteorological events they encountered by switching flight behaviour to take advantage of multiple modes of subsidy. Orographic soaring occurred more frequently in morning and evening, earlier in the migration season, andwhen crosswinds andtail windswere greatest.Switching between flight modes allowed migration for relatively longer periods each day and frequent switching behaviour has implications for a better understanding of avian flight behaviour and of the evolution of use of subsidy in flight. © 2015 The Author(s) Published by the Royal Society. All rights reserved. },
    AFFILIATION = { Division of Forestry and Natural Resources, West Virginia University, Morgantown, WV 26506, United States; USDA Forest Service, Northern Research Station, Parsons, WV 26287, United States; Department of Statistics, Colorado State University, Fort Collins, CO 80523, United States; Cellular Tracking Technologies, LLC, 2405 North Center Avenue, Somerset, PA 15501, United States; Virginia Department of Game and Inland Fisheries, Fredericksburg, VA 22401, United States; Department of Civil and Environmental Engineering, Lafayette College, Easton, PA 18042, United States; Environment Canada, Quebec City, QC G1J 0C3, Canada; Ministère des Forêts, De la Faune et des Parcs, Québec, QC G1S 4X4, Canada; US Geological Survey, Forest and Rangeland Ecosystem Science Center, 970 Lusk Street, Boise, ID 83706, United States },
    ART_NUMBER = { 20150530 },
    AUTHOR_KEYWORDS = { Aquila chrysaetos; Flight behaviour; Golden eagle; Migration; Subsidized flight; Weighted-k nearest neighbour },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1098/rsif.2015.0530 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948672214&doi=10.1098%2frsif.2015.0530&partnerID=40&md5=9242715e6d9fa34bc8450728e79e731a },
}

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