My stepfather had a parrot when he and my mom met sometimes during the 80's.... anyways my stepfather was by that time was quite a heavy drinker, he had to become sober in order to get to meet my and my little brother and has been sober ever since, anyways every time we had company over for dinner or something that had a beer, as soon as "jackson" saw the beercan he would go "pkssst" mimicking the sound of a can being opened. he also mimicked the phone good enough so that we quite often answered the phone even tho it wasnt ringing. well, he talked alot, an he was and was the whole families little baby.
Oh, he also called the dog. and also did let you know the coffee break was over when someone had a cup of coffee.
As i sed he used to be with my stepdad everywhere, including at work, and my stepdad was selfemployed and apperently didnt like his staff drinking coffee and slacking when there wasnt time for a break... but even tho he moved in with my mother and us and stayed stationary in our home some things still prolonged for the 17 years he was with us. I have no idea how old he was when my stepdad got him but he had had him for about 25 years before he moved in with us...
But as far as context... i dunno the hello, goodbye and goodmorning etc comes out in context, but still they do have the que of someone entering someone putting on their shoes or lights being turned on/off