I never said that their intelligence is correlated to their ability to train and socialize with humans.
you didnt define your definition of inteligence in your original post you did however ask for the opinion of people with multiple birds i would assume you mean more than one as you didnt define that either. well i am one of those people.
I dont know why you are qualifying your responce with a dog analagy they are domesticated animals domesticated over thousands of years my understanding of intelligence is the ability to learn and manipulate your enviroment if what my bird doing stepping up isnt that then what is it ?
I didnt happen to live in a large European city i do live in a large European city my city has a flock a wild Indian ringnecks that live in a local park they have manipuated there enviroment to exist and flourish in my city.
What you are describing is a learned behaviour it's evolution its what dogs do as they are very much domesticated if thats what you wondered what birds do that was answered earlier.
but only the smartest were able to survive.
This is also incorrect the most dominent where able to survive
Dogs see people they see a feed its in them unless you are talking true wild african dogs
Have you ever seen Japanese fisherman using cormorants to fish ? thats inteligence manipulating there enviroment and its inhabitants they will keep me nice and safe and away from predators i will catch loads of fish ( dead easy for me ) i will get fed and a nice safe house at night.
you could possibly define this as a symbiotic relationship you look after me i look after you like a clownfish and a cripsa anemone you keep me safe i feed you then nem keeps the clownfish and its egg safe the clownfish feeds the nem however this is true symbiosis it's nature evolution. the Japanese fisherman is a learnt behaviour a manipulation on both parts it's not evolution it's inteligence.
Mojo rolled on her back one day whilst in her cage i laughed so she done it again i laughed and asked her to roll over so she did next time i asked her to rollover she didn't so i offered her seed and asked her to she rolled over, Who was manipulated ? who was trained ? Mojo manipulated her enviroment aka me that is a sign of inteligence.
also your responce regarding dogs is very much about them sociaising with humans so you cant say there intelligence isnt corelated to socializing with humans..