Is there a correlation between increase in hog population and decrease in deer population?
My friend didn't get any deer this year at his lease and he blames it on increase in hog population in and around the lease.  He believes hogs out compete deer for resources and thinks hogs are killing/eating fawns.  Anybody else notice this?

I have no direct knowledge, but it wouldn't surprise me.

Just saw a picture recently on one of the national deer hunting sites of a hog with a fawn in its mouth.  So I would say they do kill fawns as do coyotes and other predators.

From the havoc I've seen them do to farm crop and like the poster above said of them killing a fawn...... short answer is yes!

Yes. Kill em all.

I dont know about deer population as a whole, but I can tell you first hand that they sure as shit drive deer out of the area.


had plenty of deer showing up to one of my feeders on my trail cam regularly.  once the pigs started showing up, I havnt seen a deer since.  now I have pigs there pretty much 24/7 and not a deer in sight.


going to have to thin the herd....

 
+1....them hogs show up, and the deer make themselves scarce.  And those sounders are quick...but I'm quicker with my 270 WIN and Hornady 140gr SSTs:














Them sows are good eatin'....

 

nice work!  I'm giving it one more week of checking cameras to confirm consistency in times they are coming out then I'm going to post up in my tree stand and start letting the lead fly.  

one of the sows that comes to my feeder on the regular just had babies... look pretty tasty.....

 
Thank you, sir!

Several years ago Texas A&M did a study on the stomach contents of feral hogs and during fawning season a significant portion contained whitetail fawns.

I only live one state over. If there is a confirmed infestation of deer eating hogs, my rifle is willing to travel!

IMO... No. Not anywhere near enough science to say hog population increases deer declines. They do not compete all that much for the same resources except water and corn from your feeder. Acorns maybe but they are everywhere.. Could it happen. ? I would say yes, but the disparity in numbers of hogs to deer would have to be large. So wide that people would have major problems with the hogs and start eradicating them before any major decline in deer population. I would concede hogs could be a contributing factor with others though.
I have watched Hogs, Deer and Turkeys all at the feeder at the same time eating with little pushing and shoving. My guess is it is governed like most food related wildlife interactions...when every one has food there is little fighting. When it is scarse whom ever is biggest or gets there first wins. Certain times of year may also be a factor as to their interactions. Except at a feeder or other type Ag feeding station I rarely see Deer and Hogs feeding right next to each other. Same field but not all that close.  
the new for us lease I have been hunting this year has boat loads of hogs and plenty of deer. If you have noticed a decline in deer I would look closer at Coyotes, Panthers, Bear and Bobcat increases on your lease. It starts with a noticeable d cline in bunny rabbits. Like the light went off and you just noticed you have not seen one in a month.You used to see 2-3 every day. Fewer coons and other small game, etc. you will also now remember you have seen more Coyotes and captured more Bears and Panthers on game cameras than you did previously. It starts slow and subtle. Almost unnoticed. By the time you put all the little tell tail signs together it is too late. Coyotes are a real problem in Florida now.