The physical size of your yard visitors is generally limited by the kinds of wild animals that have not been precluded by human population density and its infrastructure.
US population density map of 2010.
I am fortunate that the Appalachian chain and the Blue Ridge Mountains still have (by comparison) relatively low population density. But that is always changing.
Watch the animated population density map of 200 years of US population expansion.
www.visualcapitalist.com
Bob
US population density map of 2010.
I am fortunate that the Appalachian chain and the Blue Ridge Mountains still have (by comparison) relatively low population density. But that is always changing.
Watch the animated population density map of 200 years of US population expansion.
Visualizing 200 Years of U.S. Population Density
This animation shows the population density of U.S. counties between 1790 and 2010, showing the westward expansion of the country's population.
www.visualcapitalist.com
Bob