You are correct, a "doe factory" is always the result of poor harvest objectives, but with just a little bit of consideration, the underlying knowhow to balancing a deer herd is not that difficult, and really only involves two main areas. The first and biggest factor in harvest objectives is to simply take one doe for every buck harvested (adjusting at the start to obtain balance), and the second factor is then taking the correct amount of deer to hold the population at levels that a property can sustain. While actually making the harvests happen to the numbers in the real world is the more difficult part, the target harvest goals should be pretty simple for most hunters to figure out.
It's interesting to use math and statistics to take a look at deer population numbers and the buck/doe ratio of any given deer herd, and here's a simple breakdown of the math; Let's start with the premise that, for statistical purposes, the reproduction rate and the non-hunting fatality rates are averaged equally between bucks and does:
Example #1: Starting with a theoretical exactly balanced herd, and hunters always take one doe for every buck they harvest, the herd buck/doe ratio remains balanced, and there will always be the same amount of bucks as does.
Example #2: Starting with a herd with 20% more bucks than does, hunters continue to always take one doe for every buck they harvest, the herd always remains 20% more bucks than does.
Example #3: Starting with a herd with 20% more does than bucks, and hunters continue to always take one doe for every buck they harvest, the herd always remains 20% more does than bucks.
This shows a simple equation; if hunters always take one doe for every buck it freezes the buck/doe ratio. Now we still have to deal with herd size, and that equation is just as simple:
Example #4: Continuing with hunters always taking one doe for every buck they harvest, if hunters (and natural fatalities) harvest the same number of does per year as there are does in the herd, the deer population remains balanced.
Example #5: Continuing with hunters always taking one doe for every buck they harvest, if hunters (and natural fatalities) harvest more does per year than there are does in the herd, the deer population will collapse.
Example #6: Continuing with hunters always taking one doe for every buck they harvest, if hunters (and natural fatalities) harvest less does per year than there are does in the herd, the deer population explodes.
I made an Excel speadsheet with 10 bucks, 10 does, and 10 hunters, and this hypothetical herd will balance forever.
Add or subtract 1 doe or 1 hunter and the herd is off by 1000 in ten years. Add or subtract 1 buck and the herd is off by 1 buck in ten years. Interesting! This simple breakdown gives any hunter the answers they need to manage their herd. And if a property is harvesting more bucks than does they are well on the way toward that mythical "doe factory" that may or may not exist
Allen