I am not surprised "bird boy" would think that way. But one must realize that the Holy Spirit could appear as anything. A dove, yes, but also as a person, in a dream, as thoughts, and in any physical manifestation or "bodily form". So the HS is not avian per se.
How long has the symbol of a dove been associated with peace? Would a 1st century Jew speaking of himself as the "sign of Jonah" have been understood by those around him as saying that he is a sign of peace?
But one must realize that the Holy Spirit could appear as anything. A dove, yes, but also as a person, in a dream, as thoughts, and in any physical manifestation or "bodily form".