Inter-annual variation in the numbers of territories for Short-toed eagle and Golden eagle in Dadia-Lefkimi-Soufli National Park fitting Generalised Additive Models. Population trend modelling is also shown for each species, with cyclic cubic regression (cc) splines used as smoothing terms. a Variation in the number of Short-toed eagle territories fitting a GAM b Predictive GAM for the Short-toed eagle with smoothed terms (cc splines) c Variation in the number of Golden eagle territories fitting a GAM d Predictive GAM for the Golden eagle with smoothed terms (cc splines).