In his third Senate term, McGee gave up the gavel of the Foreign Operations Appropriations Subcommittee to become Chairman of Agriculture, Environmental and Consumer Protection Appropriations Subcommittee. He would remain Chairman of that subcommittee until he left the Senate. At an August 1971 hearing held by McGee's subcommittee, a Wyoming helicopter pilot testified that sheep ranchers paid him to fly near eagles which they killed with shotguns. About 500 bald eagles were destroyed in this manner, the pilot said. The Wyoming Woolgrowers Association had claimed that 8,000 lambs were lost to eagles annually, and the group's president declared he had seen eagles kill grown sheep and antelope. Conservationists disputed the figures and said that eagles seldom touched lambs unless they were already dead. A University of Montana study of prey items collected from 40 golden eagle nests over a three-year period found evidence of only one dead lamb and one dead sheep, with no proof they had been killed by eagles. In October 1972, Congress approved legislation strengthening the penalties imposed for violations of Bald Eagle Protection Act of 1940.