Everything in that picture looks like it's good to me with the exception of the "Dovetail" looking point. The base just doesn't look right to me and my guess is it's a modern reproduction.
Nice looking pieces though. I wish I had a friend that would give me artifacts that nice.
Without actually holding the pieces in my hand, and closely examining patina, flint crush, mineralization, etc. it's really difficult to say just looking at a picture. That huge dove does look fake though, If one piece in the group is fake I'd personally be wary of the entire lot.