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Flight range, fuel load, and the impact of climate change on the journeys of migrant birds.

Howard, C. and Stephens, P.A. and Tobias, J.A. and Sheard, C. and Butchart, S.H.M. and Willis, S.G. (2018) 'Flight range, fuel load, and the impact of climate change on the journeys of migrant birds.', Proceedings of the Royal Society B., 285 (1873). p. 20172329.

Abstract

Climate change is predicted to increase migration distances for many migratory species, but the physiological and temporal implications of longer migratory journeys have not been explored. Here, we combine information about species' flight range potential and migratory refuelling requirements to simulate the number of stopovers required and the duration of current migratory journeys for 77 bird species breeding in Europe. Using tracking data, we show that our estimates accord with recorded journey times and stopovers for most species. We then combine projections of altered migratory distances under climate change with models of avian flight to predict future migratory journeys. We find that 37% of migratory journeys undertaken by long-distance migrants will necessitate an additional stopover in future. These greater distances and the increased number of stops will substantially increase overall journey durations of many long-distance migratory species, a factor not currently considered in climate impact studies.

Item Type:Article
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1098/rspb.2017.2329
Publisher statement:© 2018 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.
Date accepted:31 January 2018
Date deposited:20 March 2018
Date of first online publication:21 February 2018
Date first made open access:20 March 2018

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