the green turtle (Chelonia mydas), the pink queen conch (Strombus gigas), the spiny lobster (Panulirus argus), typical coral reef fish and 92 species of birds. Los Roques is a meeting point for some 50 species of migratory birds from North America. Among the most frequent birds are the brown pelican (Pelecanus occidentalis), two species of booby birds, the red-legged one (Sula sula) and the brown booby (Sula leucogaster) and the guanaguanare gull (Larus atricilla). Also some groups of flamingos (Phoenicopterus ruber) are usually observed. Four types of turtles regularly nest in the archipelago that are on the list of threatened species worldwide: loggerhead or loggerhead turtle (Caretta caretta), green or white turtle (Chelonia mydas), leatherback or cardon turtle (Dermochelys coriacea) and hawksbill turtle (Eretmochelys imbricata). In Los Roques National Park, nine different types of octocorals are located. The low concentration of octocorals is possibly due to the deeper average subsidence of the atolls in Los Roques. This coastline shelters in its waters coral bars with a wide diversity of species. Flora Several mangrove species (Rhizophora mangle, Avicennia germinans, Laguncularia racemosa and Conocarpus erectus), extensive seagrass meadows (Thalassia testudinum), halophyte species such as glass grass, red purslane or beach bell (Sesuvium portulacastrum), cactus such as prickly pear guasábara (Opuntia caribea) and the crop or melon (Melocactus caesius). Government Los Roques is a Federal Dependency that is administered directly by officials appointed by the central or federal government of Venezuela. Between 1990 and 2011 the central government appointed a director for the Single Area Authority (Autoridad Única de Área) within the Federal Dependencies, but that last year the central government created the figure of the Miranda Insular Territory (Territorio Insular) that encompasses not only Los Roques but La Orchila and Las Aves Archipelago. The headquarters of the head of government (Jefe de Gobierno) of the insular territory is the island of Gran Roque to the north of the Los Roques Archipelago. Additionally in the island there are dependencies of other public organisms such as Inparques (National Parks Institute) since the archipelago is a national park and the National Guard of Venezuela (Guardia Nacional). Executive Power According to the provisions of the Organic Regulations of the Head of Government of the Miranda Island Territory, it is composed of a Head of Government, a Secretary of Government, a legal consultancy and various secretariats, coordinating offices and sub-secretariats. The head of government is an official