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Fig. 3 | Movement Ecology

Fig. 3

From: Flight speed and performance of the wandering albatross with respect to wind

Fig. 3

Ground speed (magnitude of ground velocity) of wandering albatrosses measured by GPS, modeled as a function of sex and the component of wind velocity in the direction of flight (Wcosθ), where W is wind speed and θ is the relative angle between wind velocity and ground velocity (θ = 0° is downwind). Data are from 22 female birds (479 locations) and 24 male birds (404 locations). The intercepts (females 10.6 m/s, males 11.6 m/s) represent the average ground speed in across-wind flight. The slope of the lines is 0.51 and indicates the fraction of wind velocity that is equal to leeway velocity (Eq. 1)

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