This 1 March 2013 video from the Netherlands says that, after their migration, the Eurasian cranes are back in Fochteloërveen nature reserve.
Translated from Vroege Vogels radio in the Netherlands:
Tuesday, February 24th, 2015 14:02
Normally, courtship and breeding for cranes is only in spring, but in the Fochteloërveen one can see the first amorous adventures of the birds already. Because of the mild winter the birds seem already to start the breeding season early. The first battles for the best nesting spots have already erupted.
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