a bird in the hand is worth two in the bush - lepší vrabec v hrsti, než holub na střeše
BrE
/ə bɜ:d ɪn ðə 'hænd ɪz wɜ:θ tu: ɪn ðə 'bʊʃ/
AmE
/ə bɜ:rd ɪn ðə 'hænd ɪz wɜ:rθ tu: ɪn ðə 'bʊʃ/

phrase - a proverb that says it's better to have something certain that's small than having a potential of having something bigger