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Fig. 3 | Movement Ecology

Fig. 3

From: Days to visit an offshore island: effect of weather conditions on arrival fuel load and potential flight range for common blackbirds Turdus merula migrating over the North Sea

Fig. 3

Blackbirds’ arrival fuel load (relative values) regressed against tailwind components (TWC, m/s; a, c) and relative humidity (%; b, d) experienced the night before arrival. For the weather data shown here, the values given are dependent on TWC calculated for flight direction towards the assumed coastal destinations of Wangerooge (autumn; 43 km flight distance from Helgoland) and St. Peter-Ording (spring; 49 km). Data is broken down by age (grey = first-years; black = adults) and sex (grey = males; black = females) for autumn (n = 919; a, b) and spring (n = 393; c, d)

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Movement Ecology

ISSN: 2051-3933