Greenland of auks, puffins, skuas, and kittiwakes. By common ducks include eiders, long-tailed ducks and the king eider and in West Greenland white-fronted goose and in East Greenland pink-footed goose and barnacle goose. Breeding migratory birds are also including snow bunting, lapland bunting, ringed plover, red-throated loon and red-necked phalarope. Of land birds that are usually sedentary, can be highlighted arctic redpoll, ptarmigan, short-eared owl, snowy owl, gyrfalcon and in West Greenland the white-tailed eagle. The Kingdom of Denmark is a constitutional monarchy, in which Queen Margrethe II is the head of state. The monarch officially retains executive power and presides
Greenland from Europe. There are no native or free-living reptiles or amphibians on the island. Phytogeographically, Greenland belongs to the Arctic province of the Circumboreal Region within the Boreal Kingdom. The island is sparsely populated in vegetation; plant life consists mainly of grassland and small bushes, which is regularly grazed by livestock. The most common tree native to Greenland is the European white birch ("Betula pubescens") along with gray-leaf willow ("Salix glauca"), rowans ("Sorbus aucuparia"), common junipers ("Juniperus communis") and other smaller trees, mainly willows. Greenland's flora comprises about 500 species of higher plants, i.e. flowering plants, ferns, horsetails and lycopodiophyta.