catch sight of

US /kætʃ saɪt ʌv/
UK /kætʃ saɪt ʌv/
"catch sight of" picture
1.

見かける, 目にする

to suddenly see something or someone, especially when you are looking for them

:
I managed to catch sight of the rare bird before it flew away.
珍しい鳥が飛び去る前に見かけることができた。
She suddenly caught sight of her friend in the crowd.
彼女は突然、群衆の中に友達を見かけた