We lived on the west side of Colorado Springs (near Manitou) from 1972 - 1982. Three blocks south of Garden of the Gods, where we walked our dogs most days.
List was about 120 species (I don't find the list right now). First sparked a real interest in birds when we had Evening Grosbeaks there! They were regulars there for several years, in large numbers, to our delight.
Other species of interest: Band-tailed Pigeons in large numbers (Hugh Kingery can attest to that, as we sent him a photograph back in the day when we used to report our quarterly sightings on paper).
Also large numbers of Pinyon Jays - such a treat!
Jim and Rosie Watts