At least one of these authors knows very well this is not true and this statement needs a retraction.

https://search.proquest.com/docview/1861702109

Dishonesty such as this is unacceptable.

Did you forget about the 2014-2015 Cerulean Warbler post-fledging study in Pennsylvania (published as a chapter in a master's thesis in 2016 and available online; presented at the North American Ornithological Society meeting in Washington, D.C. in 2016) prior to repeatedly claiming in this article that your study was the first to investigate and first to describe associated habitat characteristic...