Wind energy harms birds, constituting violations of the mandatory Bald and Golden Eagle Protection Act. This Act was not visibly enforced until late 2013. We examine the effectiveness of this visible enforcement on eagles’ abundance protection through the pathway of wind energy in the continental United States. We find that bald eagles’ abundance continues to decline after 2013 but at a reducing rate. Golden eagles’ abundance increases immediately right after the enforcement but remains stable in later periods. We also discover that wind turbine presence negatively affects bald eagles before the enforcement, but they are protected in turbine-presence counties after 2013 since this enforcement effectively regulates wind energy development. Wind turbine presence has no significant effects on golden eagles’ abundance both before and after the enforcement. There are also no significant changes in how the number of wind turbines and wind energy rated capacity affect both eagles’ abundance after 2013.