Piatra craiului it's a very beautiful place of romania with beautiful birds and mamals but the best is Danube Delta!
In August 1990, the Danube Delta was declared by UNESCO reservation of the biosphere. It is made up of the delta, the complex of lagoons Razim-Sinoe and Valea Dunarii upstream until it gets to Cotul Pisicii, measuring a surface of 591.200 ha. This represents 2.5% of Romania's territory. In this area, the vegetal associations comprise of over 1.150 species of plants grouped as it follows:
aquatic plants - hydrophilic submersibles or natante, nenuphars, yellow water lilies, club mosses, sword flags, etc.
the floating reed islet, 19.5 km2 - floating island, thick of 0.60-2 m, made up of roots and reed rhizomes.
the riverside coppices of willow trees, poplar trees, red and white sea buckthorns
exotic forests on Letea and Caraorman narrow reefs made up of autumnal and pedunculate thick oak trees, black and white poplar, alder trees, elm trees etc., shrubs like the hawthorn, the cornel tree, the privet, Mediterranean vegetation, ivy and Virginia creeper, and also lianas, clematis vitalba, humulus rupulus, periploca graeca
60% of the world's population of cormorants
the largest cormorant population in Europe
almost half of the world's population with red neck (they spend the winter here)
besides these ones, we can also notice the winter and summer swan, wild ducks and geese, white, gray, yellow and red herons, cranes, egrets, spoon bills, eastern flossy ibis, bald coots, white tailed eagle, Dobrudjan hawks, storks, flamingo birds.
Ichthyofauna comprises over 1.500 fish species, among which we can mention: the sturgeons- the beluga, the Black Sea sturgeon, the sterlet and the sevruga
the bearers of black roes: the mackerels, the anchovies, the carp, the sheat fish, the pike perch, the pike etc.
The Danube Delta also offers the favorable living environment for mammals - the wild boar, the fox, the otter, the mink, the ermine, the muskrat, etc. The reptiles are not missing, either: the sand snake, the small steppe viper and more rarely the land turtle.
On delta's narrow reefs we encounter sandy and golden sands, formed on loessoide sediments, and in the lower areas, soils with excessive humidity - lacoviste and alluvial soils.