Bear rut effected by weather?

[mustelid_master]

Q: If a spring is slow to arrive and unseasonably cold, say June 1st of a given year has May 20th snow levels and temperatures, will the bear rut be delayed? Or is it go-time regardless of temp and snow conditions?

 

[mike.adams.467]

In my opinion, the rut is going to happen when it normally does, be it deer, elk, bears, moose, etc. Generally speaking, of course, but it seems to hold true.