How do they get such crazy footage for nature documentaries?

Question

I’m watching Our Planet on Netflix right now and this one single episode has Siberian tigers, giant aerial bird fights, and underwater newt orgies. According to the doc, Siberian tigers roam a 30x30sq mile area in the winter. How do they get such high quality footage of such seemingly rare animals/events?

In: Other

Answer 1

All the more recent (last few years) BBC David Attenborough documentaries have a section at the end that shows how they get some of the footage. Pretty impressive. It can literally take years to make a few episodes.