“The reason in my opinion, they have something to hide,” he said.
“They don’t want to show the population of golden eagles in Scotland has fallen quite substantially since the windfarms were built."
Anti-windfarm campaigners shared the concerns of Spain-based Mr Duchamp.
Scotland Against Spin chairman, Graham Lang, said: “If the news is bad, bury it – which is why the census will not report until next year.”
Anti-windfarm campaigner Lyndsey Ward, from Kiltarlity, said protecting the population of the iconic golden eagles must be of “paramount importance”.
“Perhaps officials don’t want to know, or the public to know, what is really happening to the eagle population in Scotland so they can allow this turbine tsunami to continue unabated,” she said.
