The Wild Bird what does it mean when a wild bird lands on you?

I get this question alot what does it mean when a wild bird lands on you. bird have been know as pest like crow for instance.when a wild bird land on you its very likley that it trusts you. i've been trying to reintroduce crows to be a human companion ship and trust. when bird lands on you it will identfy you to its young eventually the faces it trust and dont trust generation after generation will be echted in to that specie brain as a trustworthy or untrustwothy person when the bird landed on it marked you as good peson of trust and if the bird trusts you now a birds frein and usaly will let you sit and feed bird feed or other such luxery to the trusted person!