The kids are opposed to the implantation of a windmill in the forest. Seeing no other recourse left, they seek nature reserve protection by 'spotting' an endangered animal. Jakob Krämer agrees to let Jan borrow his trained bold eagle, which the knaves senses to be at dubious choice. Doc immediately spots it's a marine, very improbably species, and tries to explain wind energy is the right choice long-term, while the mighty eagle is dangerous for prey and possibly even kids.
—KGF Vissers