It is part of the Narragansett Bay National Estuarine Research Reserve, along with nearby Prudence Island and Patience Island, and home to colonial wading birds during their nesting season of spring and summer.The word "hope" is the Rhode Island motto and used on the Rhode Island State Seal with an anchor because Williams was inspired by the Biblical passage "hope is the anchor of the soul" in Hebrews 6:19.Hope Island was then sold to Hiram Aylsworth in 1873 who kept the land until it was taken by the Navy as an ammunition depot for World War I. Aylsworth's grandson, Aylsworth Brown having spent childhood summers on Hope Island, later purchased property in the Prudence Park area of Prudence where he aptly named his new home “Hopeview.”[citation needed] There is an 18th-century farm site on the west side of Hope Island that was built probably by Hiram Aylsworth.During World War II, the island was used by the U.S. Navy as an ammunition storage site.[citation needed] There are still ammunition bunkers and concrete roads remaining from this period.