I heard that chicken was originally considered pareve in the Bible, because it is a type of fowl (i.e. like fish it is pareve, as it is not 'meat'), and that only later was it changed to be meat ...
If eating milk and chicken is only a rabbinical prohibition, why don't we find that we are more lenient with regards to it. For example, why don't we wait less time between eating chicken and milk? ...