Based on the article “Reptiles and amphibians”, by Andrew Self, in Birds of Brent Reservoir
In an attempt to catalogue the reptiles and amphibians of Brent Reservoir a survey was carried out at the reservoir in 1995 (Atkins and Herbert). Using this information and the personal observations of regular birders at Brent it is possible to give a brief list of the reptile species that have been recorded and a summary of their status.
- Grass Snake Natrix natrix
There are few records of this species. The only traceable reports are of one near the Rifle Range in the 1960s (per L. Batten) and one swimming in North Marsh on 2nd September 1994.
- Slow-worm Anguis fragilis
Two Slow-worm were observed in May 1989 near the Sailing Base and the species has been recorded on several other occasions since then.
- Common Lizard Lacerta vivipara
Previously a common and widespread species, the Common Lizard is now rare. Two reported in a garden in 2015 were the first in the recording area since 1994, when one was found on the Dump.
- Red-eared Terrapin Chrysemys scripta elegans
Since the late 1980s this American reptile has been illegally released into the reservoir on a number of occasions. It is most often seen in the summer when basking in the sunshine on a log or a piece of discarded rubbish in the reservoir. In 2018, more than a dozen could sometimes be seen apricating on one of the small rafts in North Marsh.
Atkins W., Herbert C. (1995) Reptile Survey of the Brent Reservoir. London: Welsh Harp Conservation Group.
Self A. (2002) “Reptiles and Amphibians”, in Birds of Brent Reservoir: The Natural History of the Welsh Harp (eds L. Batten, R. Beddard, J. Colmans, A. Self). London: Welsh Harp Conservation Group.