Fig. 5
From: WATLAS: high-throughput and real-time tracking of many small birds in the Dutch Wadden Sea
Large-scale space use of 221 red knots tracked between 1 August and 1 November 2019 (92 days) within the entire study area. The colour scale represents the number of localizations in 500 × 500 m grid cells. Note that the colour scale is logarithmic. Water is coloured blue, land dark grey, and mudflats light grey with a solid line indicating their boundary. Because the tags send a signal at 1/6 Hz, each localization represents a minimum of 6 s of space use for red knots. The coordinate system refers to UTM 31 N. © map data from Rijkswaterstaat