Fig. 1From: Miniaturized multi-sensor loggers provide new insight into year-round flight behaviour of small trans-Sahara avian migrantsExample of raw data time series of (a)Â light intensity (green), (b)Â air pressure (pink) and (c)Â activity (orange). Activity is derived from accelerometer data and processed on board (see methods). Examples of single flight bouts are marked by shaded areas. Y-scales for light and activity show arbitrary raw values as recorded by the sensorsBack to article page