This is a video about a singing corncrake (with chiffchaff sound in the background).
Translated from the Dutch Sovon ornithologists:
Friday, July 3rd, 2015
To hear the raspy sound of the mysterious corncrake, this spring you had to go primarily to Groningen province. Nearly three-quarters of the birds counted are in this province, especially in the vast grain and alfalfa fields of the Oldambt region. This is evident from the special census Sovon has been organizing since 2000.
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