Latin name: Phylloscopus sibilatrix
The wood warbler is the largest of the green warblers and has two totally different songs. There are still some woodlands in the Dales, notably Strid Wood on the Bolton Abbey Estate and Grass Wood near Grassington, where the distinctive trilling call of the Wood Warbler can still be heard
It is hoped that increased bird recording through involvement in the British Trust for Ornithology (BTO) Breeding Bird Survey (BBS) will improve our knowledge of a range of upland bird species in the Dales.
The population of this species is thought to be declining in the UK. The causes of its decline are not fully known. In 2007 it became a UK Biodiversity Action Plan priority species and in 2011 it was added to Nature in the Dales: 2020 Vision the second biodiversity action plan for the Yorkshire Dales National Park.