With accent marks:
У семи́ ня́нек дитя́ без гла́зу.
~ Seven babysitters make the kid to lose an eye.
The more people take on one task, the less attention is paid to the task.
The closest English equivalent: too many cooks spoil the broth.
Other Russian proverbs
A bird is visible by its flight.
With whom you are friends with, from them you will learn.
Hurry to much and you will make people laugh.
Where there is no fish even a crayfish is a fish.
In a healthy body, healthy mind.
Where it is thin, it breaks.
When I eat I am deaf and mute.
To live a life is not the same (not as easy) as to go through a field.