A once common bird faces disappearing in Yorkshire unless farmers help to save it, the RSPB has warned.
The RSPB say farmers can protect the future of the corn bunting
Corn buntings used to be common in East Yorkshire, but a county survey by the charity found only 150 males were left.
It is thought there are approximately the same number of females but the study revealed numbers of the bird had fallen by 70% over the past 10 years.
The society wants farmers to make use of government grants to adopt wildlife friendly farming methods.
Simon Tonkin, of the RSPB, said the results of the survey were worse than expected.
He said: "It's clear from this survey that the future of corn buntings in East Yorkshire is balanced on a knife edge.
"The future of Yorkshire's corn buntings lies in the hands of local farmers and there are some easy ways they can help.
"The government's Environmental Stewardship Scheme rewards farmers for carrying out wildlife-friendly farming and offers the best hope to safeguarding the remaining birds."