I think you're confusing a couple of different things. The eagle goat footage from Frozen Planet was shot by Attenborough's own team. There was nothing faked about it.
There is some older footage of a similar thing but it's from a film and is all fake. The Frozen Planet footage is the first time it's been recorded for real.
There is also some Frozen Planet footage showing an eagle's view of flying over some mountains. That footage did use a trained eagle mainly because it's difficult to strap a camera to the back of a wild eagle and still have a face left.
> The eagle goat footage from Frozen Planet was shot by Attenborough's own team. There was nothing faked about it.
Attenborough does not have his own production team. Most of the footage in Frozen Planet was produced by the BBC, but not all of it. Over 30 shoots were produced locally.
The Frozen Planet golden eagle footage is mixed and contrived, and it is easy to tell by the editing. The BBC shot all in ultra high definition, and some of the footage of golden eagles is in 8K and shot with a really decent professional camera. The drone footage is of a trained eagle, otherwise it would have taken down the drone. And the footage of the eagle taking down the kid and flying with the kid (for some reason we don't see it lifting the catch, probably because it is a stuffed prop) and dropping the kid is in 1080p shot with a shitty semi-professional camera with shitty lenses, upsampled to 8K and downsampled in post, as is evident by the grain. The eagle in the nest feeding the baby is not the same eagle, and it is not feeding the baby the kid.
A falconer named Jordi Isern[1] that shoots in the Andes shot the footage of his own pet golden eagle that he trained to hunt chamois (the goats in the footage).[2] That is Isern's footage that the BBC remotely directed and later edited to mix with their own footage. Wild golden eagles do not hunt chamois, and for good reason.[3] Chamois are incredibly resilient and tough creatures, while the bones of golden eagles are hollow. The diet of golden eagles is rabbits, hares, ground squirrels, prairie dogs, marmots, fish and carrion, all of which is plentiful, so there is no reason for the grave risk of taking such large and dangerous prey.
Trained eagles will hunt anything they're trained to hunt.[4] Isern is not the first to train a golden eagle to do this. There are other falconers in California (the first to do this as a proof of concept, shot on actual film before the advent of HD video, that I can not locate, lost in Google's shitty algorithm and the noise of the Internet perhaps forever, but it exists) and Spain[5] that have done the same thing. It's such a fantastic idea that the BBC and Attenborough couldn't resist, with Attenborough rationalizing that maybe kids were prey, but not adult chamois, thus Isern was directed to show the adolescent struck rather than an adult chamois being pulled off a mountain by its horns. Wild golden eagles don't fuck around wrestling with their prey. They always kill on impact.
Those falconers suck, and it sucks the BBC and Attenborough are involved. But it's definitely bullshit.
There is some older footage of a similar thing but it's from a film and is all fake. The Frozen Planet footage is the first time it's been recorded for real.
There is also some Frozen Planet footage showing an eagle's view of flying over some mountains. That footage did use a trained eagle mainly because it's difficult to strap a camera to the back of a wild eagle and still have a face left.