Polar porkies?

From Wikipedia

An interesting post from polarbearscience suggests to this sceptical observer that we are still being dosed with propaganda when it comes to polar bears and climate change.

Activist polar bear biologist Andrew Derocher (University of Alberta) may have gone too far this time. In an interview with Yahoo News,Derocher is quoted as saying:

“When I first started here about 30 years ago the population was about 1,200 bears and now we’re down to about 800,” team member Andrew Derocher, a biology professor at the University of Alberta, said in a phone interview from the tundra outside Churchill.” [my bold]

There is no peer-reviewed research published anywhere that gives a population estimate of ~800 bears for Western Hudson Bay — so is this number quoted by Derocher based on some of his secret research that hasn’t been published or did he just make it up? 

Make it up? Sounds like normal service to me.