Durleston
(Dorset)

Closest Town:

SWANAGE (0.8 km)

Introduction date:

Circa 1990s

Site Name:

Durleston

Source of introduction:

Unknown

Site Access:

Public

Colony Status:

Extirpated

Relative population estimate:

3

Extirpation date:

Circa 1990s

This unconfirmed colony, based at the site of Durlston Castle, is believed to comprise the green-backed form, as found at the other two Purbeck coastal sites. The date of origin is unknown

Only 3 individuals, all males, have been reported between 1999 and 2001. This is a presumed private release that did not establish a viable colony.

Not assessed

Sea cliffs and old fort

Probably green-backed form.