I haven't MIB but Colorado, if not Colorado Springs specifically, is very much on the list and i need to spend more time there other than just passing through on the California Zephyr like i done before.
Here's some numbers on what i found, a quick knock up.
There's a key 5 year spell where sightings were high in both areas, between 1997-2002.
This spell coincided with Colorado Springs becoming one of the fastest growing Cities in the US.
80% of all Reports within a 40 mile radius of Colorado Springs (20/25 reports) were prior to 2002, with 65% of those coming within that 1997-2002 time period.
The drop off confused me as we went from a steady number of reports from the 70's and 80's in the area, to a boom in the late 90's and very early 00's with over 2 reports per year, then only 5 reports in a 14 year period.
So i started to look for other cluster areas in and around Colorado and found an area that i noticed had reports in, and a lot of them since 1997.
The area doesn't have a name per se but is in the general vicinity of Leadville.
I started looking at what the area had and tried to get an understanding of it (just as i was curious about this, nothing more, no expertise etc) and came across a hunting website that sold migration routes of ungulates in a Google Earth Layer when a button kind of switched.
So i purchased the layers, added them on to Google Earth and the layers virtually overlapped this new area perfectly.
Numbers from the new area were close to a complete role reversal of Colorado Springs with the same spike in activity in that 5 year period of between 1997-2002.
77% of all Reports within a 40 mile radius of the new area (20/26 reports) were from 1997 to today, with 70% of those coming within that 1997-2002 time period.
It's interesting if not conclusive, but another little tidbit that i like is that there is a four report trail in a year period between late 1999 to late 2000 that travels from the Colorado Springs area then along and hugging the South Platte River, that heads west with every report almost directly to the Leadville area.
We're left with a tonne of surmising where this is concerned as usual IMO, but at least it's something that people could actually get their teeth in to.
It appears to me that there was something up in that 5 year period from 1997-2002, what that was we obviously don't know but to have the amount of reports in that period in both areas that we had, would lead me to allow for the possibility that animals were being displaced.
When animals move they invariably get seen/heard and leave sign/tracks.
I'm not saying that's for definite in this case but the numbers are what they are and there would be, at least in this case with the spikes, a reason behind the numbers being what they are here and that's a good a reason as any i've personally thought of so far.