| Customary approacha | Ekstrom (2007) | Nielsen & Siebert (2007) | Sumner et al. 2009 | Current contribution |
---|---|---|---|---|---|
R package | GeoLight | Â | Trackit | TripEstimation | FLightRb |
Few points per twilight | + |  |  | +− | + |
Shading cloud cover free | Â | + | Â | + | + |
Optimisation | Â | least squares | UKF | MCMC (block update) | particle filter |
Movement allowed | Â | Â | + | + | + |
Landscape mask | Â | Â | Â | + | + |
Migratory-sedentary switch | Â | Â | Â | Â | + |
Behavioural-landscape masks | Â | Â | Â | Â | + |
Positions | + − (not close the equinox) | + | + | + | + |
Assesment of precision of estimates | Â | Â | + | + | + |
Distribution of possible positions | Â | Â | Â | + | + |
Distribution of possible transitions | Â | Â | Â | Â | + |