It is quite an art, counting heads of cattle. Better leave it to the experts.
At the start of 2010, the Dutch state forest service Staatsbosbeheer reckoned there were 400 heck cattle wandering around the Oostvaardersplassen, but it turned out there were only 260. That discrepancy caused quite a commotion over the summer. Good reason to call in Alterra to do a recount. Alterra experts say it was half a day's work.