Have you noticed any change in animal populations where you live?

Huge increases in deer and squirrels for sure. I can barely shoot the squirrels fast enough to keep their population in check. The deer destroy every bit of our yard that they can reach and have now started jumping into our fenced back yard to destroy it as well. They also apparently know exactly when hunting season starts and make themselves scarce at that point so I haven't had much opportunity to reduce their population. Outside of mammals, it seems that there have also been huge increases in mosquito, tick, and ant populations. It's a constant war with all 3 every year in my house. I haven't really noticed much of a reduction in anything. We don't use any chemicals for anything and keep tons of plants that flower and fruit at various times of the year and it shows. Most animals and bugs like to be in our yard so we have tons of butterflies, bees (both many kinds of native bees and honeybees), wasps, lightning bugs, beetles, etc. around. I also regularly see chipmunks, possums, raccoons, various kinds of snakes, dozens of kinds of birds, several kinds of lizards, several kinds of frogs and toads, salamanders, crayfish, foxes coyotes, etc. all the time in addition to the aforementioned squirrels and deer.