The significance of the title VI Fun defeats me completely, so I will be interested to see the explanation.  The only vague thing I can see in the title is VI as the Roman numeral for 6 and there are six unclued birds.  There is the even more unlikely interpretation of VI as Vide Infra meaning ‘see below’.  Taken with the Fun bit we could have ‘See below for fun’ as being descriptive of the puzzle as a whole.
The significance of the title VI Fun defeats me completely, so I will be interested to see the explanation.  The only vague thing I can see in the title is VI as the Roman numeral for 6 and there are six unclued birds.  There is the even more unlikely interpretation of VI as Vide Infra meaning ‘see below’.  Taken with the Fun bit we could have ‘See below for fun’ as being descriptive of the puzzle as a whole./The significance of the title VI Fun defeats me completely, so I will be interested to see the explanation.  The only vague thing I can see in the title is VI as the Roman numeral for 6 and there are six unclued birds.  There is the even more unlikely interpretation of VI as Vide Infra meaning ‘see below’.  Taken with the Fun bit we could have ‘See below for fun’ as being descriptive of the puzzle as a whole./VI Fun
Inquisitor 1769 Vi Fun by Wiglaf