Have to agree with GMMT - I have seen others do the same math but few will believe.

I started believing it 3 years ago when I got a new property to hunt.
Glassing it during June and July when bachlor groups are common and strong, the ratio was never higher then 3 to 1.
Actual buck sitings after mid Sept and on into season (mid Oct to mid Dec) are 10 to 1 or higher.
Bucks are there - they just don't parade like the doe groups other then for a brief time maybe in the summer.

Steve