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Winds experienced by migrating bar-headed geese: wind patterns (mean wind speed and direction) during (a) southward migration (1 October–31 December) and (b) northward migration (1 March–31 May), where arrows indicate wind speed and direction (largest arrow size and red colour denotes strongest wind speeds; see legend). Black arrow shows schematic of travel. Black dots show GPS locations received from bar-headed geese at coincident temporal scale to winds.
