Perspective from the Heartland, and K-State ain't a bastion of liberal green ideology.
https://www.thekansan.com/news/20200315/where-have-all-pheasants-gone

The Meadowlark loss is a canary in the coalmine but one source, of course, blames global warming
https://www.kansas.com/news/state/article244425637.html

2021 forcast
https://ksoutdoors.com/Hunting/Upland-Birds/Upland-Bird-Forecast

Missouri Conservationist in 2011
https://mdc.mo.gov/magazines/conservationist/2011-05/where-have-quail-gone

Short story from 2020
https://www.fourstateshomepage.com/...have-dropped-80-in-the-last-50-60-years/