Lithium be cut with a knife. When cut, it possesses a silvery-white color that quickly changes to gray as it oxidizes to lithium oxide. While it has one of the lowest melting points among all metals (180 °C), it has the highest melting and boiling points of the alkali metals. Lithium has a very low density (0.534 g/cm), comparable with pine wood. It is the least dense of all elements that are solids at room temperature; the next lightest solid element (potassium, at 0.862 g/cm) is more than 60% denser. Furthermore, apart from helium and hydrogen, it is less dense than
Metallic pigeon young is duller than adult. The metallic pigeon is distributed to tropical forests of eastern Indonesia, the Philippines, New Guinea, Solomon Islands, Fiji, New Caledonia, Samoa and surrounding southwest Pacific islands. A subspecies, the Lord Howe pigeon, used to exist on Lord Howe Island in Australia, but was exterminated by hunting c. 1853. The diet consists mainly of various fruits, grains, seeds and berries. The female usually lays one to two eggs. Widespread and common throughout its large range, the metallic pigeon is evaluated as Least Concern on the IUCN Red List of Threatened Species. Metallic pigeon The metallic pigeon,