We may, under the provisions of this section, issue a permit authorizing the taking, possession, transportation within the United States, or transportation into or out of the United States of lawfully possessed bald eagles or golden eagles, or their parts, nests, or eggs for the scientific or exhibition purposes of public museums, public scientific societies, or public zoological parks. We will not issue a permit under this section that authorizes the transportation into or out of the United States of any live bald or golden eagles, or any live eggs of these birds.