A bird in the hand is worth two in the bush

ضرب المثل
A bird in the hand is worth two in the bush
معنی: 

Something that you already have is better than something else you may get later especially if there is the risk of losing what you already have.

آنچه هم اکنون داری بهتر از آن چیز دیگری است که ممکن است بعدا به دست بیاوری. مخصوصا اگر این خطر وجود داشته باشد که چیزی را هم که داری از دست بدهی.

معادل فارسی: 

سیلی نقد به از حلوی نسیه

گنجشک به دست به از باز پریده

مثال: 

She said she would come and help us next week, but I really don't trust her. She might not come again next week. I think we had better do part of the job just today. You know better that a bird in the hand is worth two in the bush.

معنای کلمه به کلمه: 

یک پرنده در دست به اندازه دو پرنده در بیشه می ارزد.