I spoke to a few other visitors and everyone said much the same thing. We all felt there was an essential gentleness about this bird, and although it must have the appetite of a longshoreman if it eats everything it's given, it nevertheless communicated an air of good breeding and decorum and showed no resentment if someone kept it waiting, then gave it nothing. Presumably there was a mix of male and female birds but they all looked and behaved pretty much the same. There was no obvious pecking order and no jostling. They sometimes peeped to each other in gentle voices and they seemed to be as polite to other wekas as they were to human beings.
Many birds are charming or impressive because of their plumage, their size or their flight patterns.
Some, like ducks or geese, can be amusing or endearing. But, except for a budgerigar our daughters had many years ago, I don't remember ever being much impressed by a bird's personality or its ability to communicate. Wekas, on the other hand, seem quite prepared to meet people on equal terms and, while asking a favour of them, repay any kindness with a show of good manners and with a degree of poise notably lacking in the human race nowadays. I feel a bit silly to have been so charmed by a bird. Maybe it's a sign of advancing age.