The U.S. Fish and Wildlife Service, a division of the Interior Department, is considering loosening regulations on the killing of bald eagles, the national bird of the United States, to accommodate the development of wind energy sources.

A draft regulation first filed in April would allow businesses to apply for 30-year permits allowing them to kill bald eagles in the course of other legal activities. The length of those permits would be a six-fold increase over the five-year window allowed under current law.

The USFWS explains at

We have reviewed applications from proponents of renewable energy projects, such as wind and solar power facilities, for programmatic permits to authorize eagle take that may result from both the construction and ongoing operations of renewable energy projects. During our review, it became evident that the 5-year term limit imposed by the 2009 regulations (see 50 CFR 22.26(h)) needed to be extended to better correspond to the timeframe of renewable energy projects.

Current law allows permitting for “programmatic” killing of bald eagles, which “is recurring, is not caused solely by indirect effects, and that occurs over the long term or in a location or locations that cannot be specifically identified.”

The USFWS notes that permits “may authorize lethal take that is incidental to an otherwise lawful activity, such as mortalities caused by collisions with rotating wind turbines.”

According to the regulation, measures will be taken to attempt to minimize bald eagle mortalities, and additional actions may be authorized if mortalities exceed “anticipated” levels. USFWS began investigating numerous bald eagle deaths associated with wind turbines in early 2012.

Without the proper permit, the killing of a bald eagle is a federal crime.