Include the bird in your daily routine. Eat, read, and do activities in their presence.

Figure out a treat the bird enjoys.

Spend time with the bird while offering them this treat, directly from your hand if possible.

Go up to but not over the limit of the bird's comfort with you. When the bird is nervous, back off.

Accept that you cannot force anyone or anything to love you.

Great-grandma Agatha lived in Big Sur, where condors are endemic and weren't remotely endangered at the time

One of the local birds had decided her garden shed roof made a good sunning perch and then started following her around while she did the garden because they're curious birds.

California Condors are like three and a half feet tall standing up and Agatha was 4'10" so she didn't exactly intimidate the creature, and she liked "having a dog I don't have to bend over to pet".

Condors, being intelligent and curious animals, clocked immediately that this woman wasn't going to be a problem and would sometimes give him fun snacks or play games (she taught him tricks), so he hung about the place, roosting on the shed and getting very protective of her and the property in general.

He also brought his wife and children to hang around the place but was apparently kind of a jealous boy who would get nippy if she paid more attention to another bird than him.

Which was good, because there was an unfortunate amount of anti-irish sentiment in the area, and against her house, my other great-grandma Florence and their four children. So a flock of birds with wingbeats hard enough to knock a man out and the ability to projectile vommit acid was a handy thing to have about.

I think his name was Gregory, but I'm not sure.

they were contemporarily hated for just being these giant grey monoliths

The photographer in question is David Slater, a wildlife photographer who spent weeks befriending a troop of macaques and setting up his camera equipment in such a way that if a curious monkey pressed a button, it would take what appeared to be a selfie. The above image is one of a set. He was not a woman whose camera was stolen and just happened to result in a monkey selfie.

The lawsuit that reconfirmed that "non-human people" cannot hold copyright in American law was nothing to do with PETA - it was actually the Wikipedia Foundation. They were hosting the image on the Wikipedia Commons because they held that as the monkey took the photo, it therefore fell under public domain. And that's true, and the court re-affirmed that works created by non-humans can indeed not be copyrighted, but made no judgement on whether David Slater was the true owner or not. Legal experts reckon he does have enough of a role in the creation of the images to establish copyright.

The PETA thing was a completely separate challenge where they swung on from stage left and insisted that animals SHOULD be allowed to be copyright holders, and therefore the macaque should get the money from the picture, but as the macaque can't use money, the money should go to PETA on its behalf.

Which was totally dismissed as being motivated by furthering PETA's own interests, rather than the rights of the monkey