Interesting how so many rhymes are up to eight. As I was scouring the trees for magpie no 2 this morning (observation by governor looming) and not finding it I remembered other rhymes we used to say mainly when counting prune stones
Tinker, tailor soldier sailor
Rich man poor man beggarman thief (8 again)
Followed by
One I love
Two I love
Three I love I say
Four I love with all my heart
Five I cast away
Six he tarries
Seven marries
Eight he steals my heart away
But then we did love prunes in our house!!
Maybe there is some significance to eight or they just couldn't use any more fingers