From TONY HOWARD
It is evident that the lack of greenness amongst sheep has evolved as
a defence mechanism against ducks – sheep being permanently quadrupedal,
they are four times more likely than a flamingo to be bumped into by ducks.
If green sheep ever evolved, they would suffer substantially greater inconvenience
as they would be invisible against a background of duck-weed, thus provoking
even more collisions.
Tony Howard Norwich, Norfolk
