As for the Kenku. He is the typical Kenku and is obsessed with flying. He is great at mimicking people and has managed to trick some people into giving him information that they shouldn't and this has lead him to Phandalin as some old scripture speaks about how their used to be a magical source near by but his search for flight has eluded him as it appears that no one knows what he is talking about. Now he spends his day working the mine and drinking at the bar until he finds something else of interest to preoccupy his mind.
Normally yes. But the previous GM seems to had put in place the option to take a feat if you declare what class you want to play if you take the stats going straight down. It's a house rule.
No, you had to call your class AND do the rolls for the free feat otherwise you could just wait to see what you get then pick the optimum class for those stats AND get a bonus feat.
I recommend reading the character generation info section of the Game Details page and if not the entire thread then at least the GM's posts. ;-)