Free: Contests & Raffles.
Well the rut is brought on by photosynthesis each year IAW Max Zahn WFDW biologist for all of the 600# GMU. It has to do with the amount of light in a 24hr period entering the rods and cone cells of an ungulates eyes. Science 101.
I don't think CedarPants was questioning the issue of sunlight having an effect on it, just the usage of term photosynthesis. Unless my science teachers were lying to me all those years.