 The Frome valley supports a range of wildlife and plants , passing through or near to a number of nature reserves and parks , including Goose Green fields , Chill Wood , Cleeve Valley , Oldbury Court park and Eastville Park . Notable species include grey wagtails , wild service trees , dippers and several species of bats . One of the last British populations of the endangered native white @-@ clawed crayfish in the Bristol area was found in the river , but became extinct in 2008 . 
