The stonechat is a similar size to a robin, with distinctive markings. Males can be distinguished by their black head, brown back, black throat and a white half collar - females and juveniles are paler.
This bird often sits on top of gorse bushes, flicking its wings. Its distinctive call sounds like two stones being rubbed together, hence where its name came from.
The heathers, gorse and Scots pine on Horsell Common suit the stonechat perfectly. They nest in dense vegetation and trees. The stonechat feeds on insects, berries, seeds, slugs and even small frogs.
For more information on the stonechat and other wildlife of Horsell Common, please visit the HCPS website.
The currawong is a bird found only in Tasmania, frequents forests, and is a glossy all-black colour with a heavy black bill, small white tip to its tail and wingtips, and bright-yellow eyes.
The Tasmanian pademelon is a small wallaby that inhabits the dense forests of Tasmania. Picture: Dan Broun
The Australasian gannet, also known as the Australian gannet, is a large seabird of the booby and gannet family. Photo: Dan Broun
The critically endangered Swift Parrot is a species of broad-tailed parrot only found in south-eastern Australia. Image: Rob Blakers
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