Response curve variables
With the exception of the Steppe eagle, most species were positively
impacted by the precipitation of the warmest quarter’s (bio18), with an
ideal mean range of 250mm-375mm. At precipitation levels below 25 mm,
the majority of raptor species’ distributions begin to decrease during
the driest month (bio 14). When precipitation falls below 200 mm, the
majority of species’ distributions also start to decline during the
coldest quarter (bio 19). The majority of species preferred temperatures
between 13 and 19 °C (bio 7). The Secretary bird and the Southern ground
hornbill were unaffected by the high temperatures, which had an impact
on the distribution of the rest of the species. The majority of species
demonstrated a preference for regions with high vegetation indices
between (0.2-0.3). A high human influence index had a detrimental effect
on the distribution of bateleur and steppe eagle (Fig. 5).