| Island populations and insular endemics thus appear to be especially vulnerable to extinction due to genetic factors. |
| Most of the non-endemic species within this group have adapted to ruderal areas, while none of the endemics occupies this kind of habitat. |
| This is in accordance with many previous studies, which have noted that endemics tend to be more susceptible to extinction than cosmopolitans. |
| Despite these recent studies, however, detailed investigations of the effects of fire on most scrub endemics have not been carried out. |
| The spurfowl is one of the most difficult of the Sri Lanka endemics to see and this was the first nest I found. |
| Thus, low temperatures have led to selection for a high proportion of local endemics and species endemic to mountain peaks. |
