A sparrow in the hand is better then a pigeon on the branch.
More Serbo-Croatian Proverbs:
Iron is worked when it's still hot.Serbo-Croatian
Those who study will know, those who save will have.
Serbo-Croatian
When cat is absent, mice dance.
Serbo-Croatian
A pan was mocking a pot because his mouth is big.
Serbo-Croatian
An ugly girl blames the mirror.
Serbo-Croatian