https://phys.org/news/2018-07-warmer-midwest-common-bird-century.html

To assess how climate change might affect the Acadian flycatcher's regional population over time, researchers combined data on local-scale, individual breeding productivity with different climate scenarios in a dynamic-landscape metapopulation model. Under severe warming projections, flycatchers breeding in many areas of the Central Hardwoods would produce fewer than one fledgling per female per year by 2100, researchers found.

"With breeding productivity reduced to this extent, this currently abundant species will suffer population declines substantial enough to pose a significant risk of quasi-extinction from the region in the twenty-first century," according to Thompson.