A Bird in the Hand is Worth Two in the Bush
Más vale pájaro en mano que un ciento volando
This saying tell us that it is better to have something for sure than to have the promise to get something in the future but that is uncertain. The bird in the hand represents the things that we have for sure or a guarantee to get something. The two birds in the bush are those things that we don’t have at hand. We might get them but it is not sure to have them.
This Greek proverb was used by Aesop in some of his fables. The Romans also used it, and in the 1400’s it was translated into English. The hunters of birds said that a bird that you had already captured (in the hand) was better than the promise of getting two instead. Sometimes, we reject things that we already have because we have the illusion of getting uncertain better things.