This letter serves as a sixty-day notice on behalf of Hui Hoʻomalu i Ka ʻĀina, Conservation Council for Hawaiʻi, and the Center for Biological Diversity, of intent to sue the Hawaiʻi Department of Transportation over violations of Section 9 of the Endangered Species Act, 16 U.S.C. § 1538, for unpermitted “take” of threatened Newell’s shearwaters (Puffinus auricularis newelli), endangered Hawaiian petrels (Pterodroma sandwichensis), and Band-rumped Storm petrels (Oceanodrama castro) from the endangered Hawaiʻi distinct population segment associated with HDOT’s airport and harbor facilities on the islands of Kauaʻi, Maui, and Lānaʻi.