TY - JOUR AU - Safi, Kamran AU - Kranstauber, Bart AU - Weinzierl, Rolf AU - Griffin, Larry AU - Rees, Eileen C. AU - Cabot, David AU - Cruz, Sebastian AU - Proaño, Carolina AU - Takekawa, John Y. AU - Newman, Scott H. AU - Waldenström, Jonas AU - Bengtsson, Daniel AU - Kays, Roland AU - Wikelski, Martin AU - Bohrer, Gil PY - 2013 DA - 2013/07/03 TI - Flying with the wind: scale dependency of speed and direction measurements in modelling wind support in avian flight JO - Movement Ecology SP - 4 VL - 1 IS - 1 AB - Understanding how environmental conditions, especially wind, influence birds' flight speeds is a prerequisite for understanding many important aspects of bird flight, including optimal migration strategies, navigation, and compensation for wind drift. Recent developments in tracking technology and the increased availability of data on large-scale weather patterns have made it possible to use path annotation to link the location of animals to environmental conditions such as wind speed and direction. However, there are various measures available for describing not only wind conditions but also the bird's flight direction and ground speed, and it is unclear which is best for determining the amount of wind support (the length of the wind vector in a bird’s flight direction) and the influence of cross-winds (the length of the wind vector perpendicular to a bird’s direction) throughout a bird's journey. SN - 2051-3933 UR - https://doi.org/10.1186/2051-3933-1-4 DO - 10.1186/2051-3933-1-4 ID - Safi2013 ER -