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Fig. 7 | BMC Ecology

Fig. 7

From: A quasi-experimental approach using telemetry to assess migration-strategy-specific differences in the decision-making processes at stopover

Fig. 7

Location of the study site Helgoland in the German Bight. From there about 50 km are to be covered across the North Sea Bering Strait to reach the mainland. a The automated digital radio-telemetry system on Helgoland consists of twelve antennas at three sites (A, B, C). Coloured bars represent the different antennas and correspond to those given in (b). b Two nocturnal departure events as recorded by the system showing raw signal strength data over time (Coordinated Universal Time: UTC). The time of departure (take-off) defined as the time of highest signal strength and the estimated departure direction based on signals from the second half of the departure event are given. Colours denote signals received by different antennas aligned to directions given in the legend. This figure was created by using R, ver. 3.5.3 [76]

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BMC Ecology

ISSN: 1472-6785

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