Speaking English Like A Native

this is and old saying that comes from the sport of bird hunting. when one bird is shot, the others fly away. it is another way saying that it is better to achieve one goal than try to do much and gain nothing,

example:

1. a bird in the hand is worth two in the bush.
2. let’s go for a bird in the hand and forget the rest.
3. he was never satisfied with a bird in the hand, and went on to become successful.