Fig. 8

Longitudes (upper panel) and latitudes (lower panel) of a track of a golden-crowned sparrow as estimated from 10-min fixing interval data by classic approach (GeoLight, dots) and FLightR. The medians of twilight positions estimated by FLightR are shown with accompanying quartile ranges and 95 % credible intervals. Note absence of the latitudinal positions from GeoLight during the equinoxes (shown by red vertical lines)