<Tr> <Th> Governing body </Th> <Td> Redberry Regional Economic Development Authority Corporation; Rural Municipalities of Redberry, Douglas, Meeting Lake, and Great Bend; Lucky Man First Nations Reserve; and Hanford, Saskatchewan . </Td> </Tr> <P> The Redberry Lake Biosphere Reserve (established 2000) is a UNESCO Biosphere Reserve covering 112,200 hectares (433 sq mi) in the province of Saskatchewan, southwest Canada . The regional landscape is composed of rolling prairie dotted with seasonal ponds and marshes along with aspen / shrub groves . The core area is Redberry Lake, a saline lake with several islands . There are small patches of natural mixed prairie which are very rare in this highly grazed and cultivated part of the prairies . </P> <P> Redberry Lake is a closed basin in which water entering the lake does not pass out through downstream flows . The lake itself is a large kettle hole characterized by a central flat bottom . Gently shelving underwater slopes occur above depths of approximately 25 metres (82 ft). Water is shallowest in the southwest, southeast and northeast areas, and around the islands . </P> <P> Major habitats and land cover types include: typical prairie grasses such as wheat grass, fescue, oat grass and sedges; forest dominated by aspen with shrubs such as rasp, silver willow and hawthorn; a saline lake with rocky islands; farmland cultivated with wheat and barley; and pasture land . The reserve provides habitats for nine endangered, threatened or rare bird species, as well as over 180 other species including the White - winged Scoter (Melanitta fusca), California gull (Larus californicus), ring - billed gull (Larus delawarensis) and piping plovers (Charadrius melodus). A key research activity undertaken in the area is monitoring of American white pelican (Pelecanus erythrorhynchos) nesting sites . </P>

What type of bird inhabits the redberry lake biosphere reserve from summer solstice to late august