Biak emerald Tanysiptera riedelii, Biak Paradise kingfisher, Riedel's Racquet-tail, Biak Paradise-Kingfisher, is one of the genus of emerald.
The Biak Island emerald is a completely carnivorous kingfisher, and its hunting techniques are much the same as those of other species of hunting kingfishers, but it also has its own characteristics. Often hidden in the shade of the tree near the water to prey on fish and shrimp. His head hardly moves while he stands, and his tail wags from time to time. It spends most of its time on the ground searching for food, digging through the soil with its mouth to prey on insects, including snails, beetles, grasshoppers, caterpillars, centipedes, earthworms, and small reptile lizards. Sometimes it makes the feathers very dirty.
The two sexes of the Biak Island emerald plant nests together in termite towers four feet above the ground. Size 15 cm x 13 cm. The female usually lays five eggs, and both raise the chicks together.
Listed in the International Union for Conservation of Nature (IUCN) ver 3.1:2008 Red List of Birds: Threatened.
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