Being game birds they're always going to have a wild and aggressive streak. I keep alot of different pheasants and work hard to have them at least comfortable with hand feeding so I can more easily check them for health issues, but despite this they aren't like chickens where you can be buddy buddy with them. Chukars from what I've seen tend to be the same way plus when breeding season comes they tend to go on a hormone induced rampage and get very aggressive.