12 February 2015 Last updated at 11:32
By Claire Marshall
BBC environment correspondent
The farmers participating in the Big Farmland Bird Count recorded seeing 117 bird types, including 14 at-risk species.
These included the linnet, the yellowhammer, starling and lapwing.
The organisers expressed delight with the preliminary results, calling them "remarkable."
More than 2,000 farmers and gamekeepers have been taking part in the survey, which is organised by Game & Wildlife Conservation Trust (GWCT).