 The wildlife on Ford Island is likely very similar to that on Naval Station Pearl Harbor . Wildlife is sparse and dominated by invasive species such as the house mouse , mongoose , brown rat , black rat , house sparrow , Java sparrow and common mynah . An endangered owl , the endemic pueo ( a subspecies of the short @-@ eared owl ) , has been seen hunting on the island . Nearly all the plant life on the island is non @-@ native , including edible cacti from California introduced in the late 1700s by Francisco de Paula Marín . The island 's harbor was important to ancient Hawaiians for its ample supply of fish , including mullet , milkfish and Hawaiian anchovy . The National Park Service and the United States Fish and Wildlife Service oversee and administer the World War II Valor in the Pacific National Monument battlefields at Pearl Harbor and Ford Island . 
