A lake with marshes and wet meadows, surrounded by woodland, hedgerows, grassland and arable land.
The site holds 20,000 or more waterbirds on passage and in winter, on a regular basis (including Anas penelope (4,500 passage); Anas crecca (2,572 (wintering); Anas platyrhynchos (5,000 passage, 3,537 wintering); Vanellus vanellus (30,000 passage); Larus ridibundus (20,000 passage, 15,250 wintering)). The site is a major migratory bottleneck, where more than 20,000 Grus grus pass, on a regular basis. Species of global conservation concern that do not meet IBA criteria include: Branta ruficollis (wintering); Aythya nyroca (passage, wintering); Haliaeetus albicilla (passage, 2-5 wintering individuals); Crex crex (passage, breeding); Gallinago media (passage).
Pressure/threats to key biodiversity
The main threat is the development of tourist activities.
National Partial International High5,000 ha of IBA covered by Hunting Reserve (Etang du Der, 5,000 ha). 60 ha of IBA covered by Private Reserve (60 ha). 56,000 ha of IBA covered by Ramsar Site (Etangs de Champagne humide, 135,000 ha). 5,000 ha of IBA covered by Special Protection Area (Lac du Der, 5,000 ha).
BirdLife International (2021) Important Bird Areas factsheet: Lac du Der-Chantecoq et étangs latéraux. Downloaded from
http://www.birdlife.org on 25/01/2021.