Hi,
You’ve been very patient!
To not answer your question directly:
You can get a better idea of your potential readers, maybe, if you already below to a group or association somehow linked to quail hunting. Are you part of “community” somehow?
For instance, I write about cane fly rods, outdoors/nature in Maine, but I already was attending rodmakers gatherings and part of Flyfishinginmaine.com. While I still had no way to be certain, I could at least bounce a draft off some people and see the reaction.
Do the people you know who would read your book use e-readers? Not that you know everyone who hunts, of course, but it’s something to think about.
So, some thoughts on topic: E-books have the advantage of no printing costs (paper, etc), so some publishers see them as a way to make a small niche book profitable. I really don’t know what you should expect in the contract, but I’ve heard 50%. If someone else does the publishing, including e-publishing, and you don’t want to do it yourself, you can factor in that when considering the contract.
Just my 2 cents,
Kat