sentences:  Three areas in the site are managed by the Essex Wildlife Trust, Colne Point, Fingringhoe Wick and Howlands Marsh.The site has varied habitats, such as saltmarsh, mud flats, shingle spits and former gravel pits.It is of international importance for wintering brent geese and black-tailed godwits, and of national importance for six other bird species, including little terns.