The federal government is considering restoring wetland that once surrounded the royal residence of King Kamehameha III before the capital of the Hawaiian Kingdom moved to Honolulu in 1845. The Honolulu Star-Advertiser says the Army Corps of Engineers anticipates a restored wetland would be used by the endangered Hawaiian stilt and coot as well as migratory water and shorebirds.  An Army Corps study estimates it would cost $11.5 million to restore Loko o Mokuhinia.