Just a quick question. NOw evolution takes place gradually over millions of years correct. Now theres a problem. Cause why aren't the rest of the apes evolving. If there was pressure to evolve dmatically iether they would of had to do it or go extinct. Now supposing that there was no pressure where are the transitional species. they in actuality would be better adapted that the present day apes so why would they go extinct. they couldn't have all evolved because the others would of had to start evolving also.
As for intelligence, how much do you think a bird could tell us. They don't even see the world the same way we do. They wouldn't have the same emotions, the same ideas about life. You need to accept that the only human intelligence that is, or more than likely ever will be is humans and possibly a few of the primates.