Oh my! Thank goodness all I have to deal with are Mourning Doves, big Crows (who scare off the doves) and squirrels. Squirrels make a mess on my walkways and cars from July to September because they are chewing the green hulls off of the walnuts and dropping them and shells all over the place. If you have a white car, you have to deal with brown stains that from the walnut hulls that are dropped on the car. Fortunately, the stains bleach themselves out after awhile.
I am not sure that I can deal with anything bigger than a squirrel, I am to much of a scaredy cat.