Squirrels consume even more of your crop, although they typically don't arrive in droves like the crows do. One squirrel can consume fourteen pounds of pecans each month, and they don't wait on hull split. They will begin invading our trees just as soon as the nuts begin to form around the first of September. We do not have a squirrel problem in our orchard. I've seen only one squirrel the entire time we've had this orchard and he must have just been passing through. While a handfull of squirrels probably won't make or break you as far as profits go, if you see the need to control these critters, many options are effective. Various traps are readily available, and repellants can be used to discourage these pests. And you can always break out your grandpa's trusty old squirrel gun.