RSPB Scotland published an estimate of the death toll and confirmed it will object to the proposal for 12 turbines on the Eisgein estate in the Isle of Lewis.
But Nick Oppenheim, the estate’s owner, accused the charity of double counting because the new development would be next door to a wind farm already given the go-ahead.
The estate, which is located on the Pairc peninsula of Lewis, is home to around a dozen pairs of breeding golden eagles, one of the highest densities in Europe.
It is also one of the favoured sites in the Western Isles for the controversial programme to reintroduce white-tailed sea eagles in Scotland.
However, energy company GDF SUEZ is already pressing ahead with plans for the 39-turbine Beinn Mhor wind farm on the estate.