The cats in this household are somewhat frightened or at least a little bit uncertain about their parrot friend who has, through observation, learned to meow just like them and in doing so intimidates them. I suspect he does that because the cats simply cannot understand what is going on. What they’re seeing is a strange creature that should be a cat but is not. I suspect that that creates uncertainty and therefore they back off. It’s a bit like the cucumber story. You put the cucumber behind the cat then when the cat sees the cucumber they are startled and frightened because they’re uncertain what they’re looking at.
Some people who commented on the video say that the parrot is in danger of being attacked by the cats. And that the parrot should never have been raised with cats which appears to be a case. I don’t believe the parrot is in danger as he has probably been rasied with the cats and therefore the cats don’t see him as prey.
Perhaps the parrot wants to be a cat. Perhaps he thinks he might be a cat. Perhaps he’s a bit confused. He may feel a bit left out of the group and wants to participate within the cat group and has learnt to meow to be one of them and not be an outsider. Perhaps that’s a bit far fetched 😉 .
Parrots are very intelligent. They’re probably more intelligent than cats if that is not an unfair thing to say and it quite possibly is because it is very hard to measure intelligence. If the parrot is more intelligent it would seem that he is more confident and is dominating the group of cats through his intelligence.
Note: this particular parrot is a cockatoo as I understand it.