Biology Reference
In-Depth Information
(a)
(b)
(c)
(d)
Figure 5.3:
(a) Bornhardt. (b) Castle koppie (c)
Nubbin. (d) Tors. (e) Shield. (Photos by Damian
Michael)
(e)
Rocky outcrops are crucial for the breeding cycle of butterflies. During the
breeding season, male butterflies congregate in their hundreds atop rocky
outcrops, waiting for a suitable mate. This behaviour is called hill-topping and
occurs in a broad range of butterfly species.
Outcrops facilitate the movement of animals through landscapes both at a large
and a small-scale. Large-scale movements include those migratory birds which use
rocky outcrops as stopover locations. At a smaller scale of movement, rocky
