How Do They Do That?

Watched a documentary on the Great Lakes in winter and the customary focus on wildlife that live in that neck of the woods. Of course there was the food chain drama— ravens calling wolves to attack a deer trapped in the ice, a lynx pursuing a potential meal, first a rabbit, then a ruffed grouse, both of which survived to be prey some other day.

I want to know how they film such encounters—do they just happen to be in the right place at the right time, or are these scenes somehow staged?

The scenes of crashing waves were breathtaking, awesome spectacle, looking every bit like waves crashing somewhere along some stretch where ocean meets cliffs. But this is fresh water. Anyway, something different to watch besides the usual fare.