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25 February 2014
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© M. Lammertink |
Konrad Leniowski and Ewa Węgrzyn
Konrad Leniowski and Ewa Węgrzyn, researchers of the signal function of red ornaments and of individual vocalizations in woodpeckers.
Izki Natural Park, Álava, Spain
Canon 50D, Canon 3.5-5.6/18-55 mm