Stork-billed Kingfishers eat mainly fish, using their large heavy bills effectively to catch and kill their prey. From their perch, usually about 2-4 m. above the water, they will plunge into the water. They also eat crabs, insects, frogs, mice, lizards, and birds, along with their eggs. Prey is brought back and whacked senseless against the perch.They usually hunt near freshwater and along coasts and mangroves, particularly in habitats with suitable perches. Unlike the Collared, Stork-billed Kingfishers are rarely found near urban areas.