You might consider planting some catnip mint under, or out by the drip line of the peach tree.
Catnip will encourage any feral cats or neighborhood cats to come visit which will reduce your bird and squirrel threat, and might dissuade any woodchucks from visiting.
Consider the catnip as a 'trap crop', unless you like catnip (relaxing) tea with camomile .
Huuum. Well, as much as I want more peaches, I do love all the birds that visit that tree - I watch them from my dining room window. Now that catnip idea I might give a try to over by my cottage (pretty shed, LOL) and see if the kitties will hang out there to give the groundhogs the fidgets. With my luck they will team up and attack me.