Like many parts of the Southern England Chalk Formation, the natural chalk and downland countryside around Chain Hill provides a habitat for many types of butterflies and wildflowers including cowslip, orchids, thistles and daisy. The mixed farmland on the hills around supports a wide variety of birdlife including yellowhammer, corn bunting, common linnet, northern wheatear, whinchat, yellow wagtail, lapwing, red kite, sparrowhawk, barn owl, pheasant, grey partridge, stock dove and skylark. Roe deer, Reeve's muntjac and red fox are regular visitors and have been sighted all along the hill in their natural habitat.