Thanks for the reply, Liz. It´s clear that several trees and nests were destroyed and that eggs were removed in at least three cases in the Uckermark. Nevertheless I could find no evidence for missing chicks from the nest near Herzfelde, as stated in the rbb text you have posted. In the corresponding rbb video report, a BUND member (Friends of the Earth Germany) says that possibly
chicks or eggs have been removed.
There is also a report about this case available on the local NABU website
. Somebody - who requested anonymity at that time - is quoted in this article. He says he believes that the marks of climbing irons and a pellet which he found in the area are the evidence that the nest was occupied.
As I understand these BUND and NABU sources, the nesting tree was illegally cut down. Unfortunately, this happens often at future wind energy sites. But the conservation organisations were unaware of the existence of this nest until very recently, and the territory was not monitored. So it is seemingly not clear if a brood was destroyed. An official statement of the local environmental authority (Landwirtschafts- und Umweltamt/Untere Naturschutzbehörde, Landkreis Uckermark) confirms in Herzfelde, April 2017, only the illegal felling of the tree.
Please let me know – here or via PM – if you have other sources of information.
Edit: Two chicks disappeared seemingly from another nest in southeast Brandenburg in 2014.