In Montana we have two native species of tree squirrel, the Red Squirrel and Northern Flying Squirrel. In addition, we have one or possibly two exotic (non-native) species, the Fox Squirrel and perhaps the Eastern Gray Squirrel. Most damage and nuisance complaints are usually about the exotic Fox Squirrels, which have been imported and have flourished in a number of Montana towns and cities.
In town these squirrels are without natural controls and their populations have reached excessive numbers. They are invading bird feeders, attics, sheds and garages. They are falling down chimneys, and stove and ventilation pipes. They are eating fruits and nuts, flower bulbs, vegetable plants and ornamentals. They feed on our garbage, unprotected pet food and even uncovered BBQ grills.