THE most threatened bird species in the Yorkshire dales are highlighted in a book produced by the national park authority and two conservation organisations.

Birds of Conservation Concern in the Yorkshire Dales National Park was written by Mr Ian Court, the park's species officer, and features black and white drawings by wildlife illustrator Mr Tony Disley.

The book was published jointly by the park authority, the Royal Society for the Protection of Birds and English Nature to raise awareness of the 27 most threatened species of birds in the park.

The birds featured were chosen from a national list of endangered birds and include the black grouse, ring ouzel and curlew, associated with uplands and moors, as well as the lowland song thrush, spotted flycatcher and linnet.

For each bird, the book includes an account of nesting habits, distribution pattern and breeding needs together with details of action taken by conservation organisations, landowners and land managers to stop the decline in numbers.

Mr Nick Mason, RSPB conservation officer, said: "The publication details the importance of the area for many species of birds. It provides decision-makers, bird enthusiasts, residents and visitors with clear information about the important bird species in the area and the action being taken to protect them."

Mr Court said: "By raising awareness of these issues through the book, we hope to help these threatened species flourish once again."

Proceeds from sales go towards species conservation. Copies are available from national park centres, £3.50. Mail order copies are available from Yorkshire Dales National Park Authority, Unit 1B, Crag Hill Road, Horton-in-Ribblesdale, Settle, BD24 OHN.