Robert Rattray, a partner at CKD Galbraith who leads the firm's sporting lets department, said: "We expect an influx of visitors to Scotland with teams of grouse shooters looking to spend on average 10,000 to 15,000 for a day's driven grouse shooting.
"We are operating bookings on property lets on some of the finest Scottish estates offering some of the best grouse shooting around. Many come from abroad, and have been for nearly 30 years, as they see shooting grouse in Scotland as the pinnacle of their annual shooting programme.
"Grouse shooting is a vital part of our fragile rural economy, both in terms of managing our vulnerable heather moorland and in providing a world class venue for sportsmen. It also provides a valuable economic benefit with the grouse industry as a whole in Scotland valued at 30m and supporting some 950 full time jobs.
"After last year's generally good grouse season in Scotland, stocks were looking favourable for a repeat. However, the cold and wet weather over the critical months of May and June (and even into July), has steadily reduced grouse numbers with some estates having to either reduce or cancel their grouse shooting programmes. Most estates have now completed their counts and adjustments are being made to estate shooting programmes. We have had to reorganise a small proportion of our shooting parties however, I am pleased that in many instances we are able to find alternative locations."
The areas still looking good for this season include the Angus Glens and the Lammermuirs, with some moors still offering days in October. Areas badly affected include parts of Inverness-shire, upper Findhorn valley and parts of Speyside, as well as areas of Aberdeenshire.
CKD Galbraith specialise in the management and letting of grouse shooting and are still able to offer driven grouse shooting for this season.