This is typical of agencies incapable of managing by gross balances and direct observations, relying instead upon sitting behind a desk with a computer. I would hate to tell you how bad the count errors are with Elk and wolves in Idaho. The populations are far to dynamic and mobile for this approach to work, ever.
Some of the problem seems to be the willingness of Journ-0-list types to create numbers to fit their political agenda.
Common sense says that native predator numbers are way up. Then there are the non-native , imported, Canadian wolves and...