Editing Lake Constance (section)

===== Overwintering =====
Lake Constance is an important overwintering area for around 250,000 birds.<ref name="BVET">[https://www.news.admin.ch/de/nsb?id=7771 Bundesamt für Veterinärwesen: Forschungsprojekt "Constanze" am Bodensee gestartet] {{Webarchive|url=https://web.archive.org/web/20150123131940/https://www.news.admin.ch/message/?lang=de&msg-id=7771 |date=23 January 2015 }}</ref> annually. Bird species such as the [[dunlin]], the [[Eurasian curlew|curlew]] and the [[Northern lapwing|lapwing]] overwinter at Lake Constance.<ref>[http://www.bodensee-ornis.de/projekte/brachvogelprojekt/ Brachvogelprojekt]</ref> In the middle of December 2014 there were 56,798 heron, 51,713 coot and 43,938 pochard.<ref name="Franz Domgörgen 2015"/> In November/December are about 10,000 to 15,000 [[red-crested pochard]] and 10,000 great crested grebe on Lake Constance.<ref>Franz Domgörgen: ''Wasservögel bleiben Bodensee treu.'' In: ''Südkurier.'' 8 August 2014, p. 23.</ref>