Catch two pigeons with one bean.

一豆捕两鸽。

youdao

Two white pigeons came in through the kitchen window, and then the turtledoves, and finally all the birds beneath the sky came whirring and swarming in, and lit around the ashes.

先飞来的是从厨房窗子进来的两只白鸽，跟着飞来的是两只斑鸠，接着天空中所有的小鸟都叽叽喳喳地拍动着翅膀，飞到了灰堆上。

youdao

They offered a sacrifice according to what is stated in the law of the Lord, a pair of turtle doves and two young pigeons.

又要照主的律法上所说,或用一对斑鸠，或用两只雏鸽献祭

youdao

"During the World War II, thousands of aircraft carried two pigeons in case they the plane was downed so they could send messages, " he said.

BBC: NEWS | UK | Phone masts 'confusing' pigeons

Finally, they released their last two pigeons.

NEWYORKER: Ghosts

With that pair of pigeons, she has eaten enough for two days, the poor old thing.

NEWYORKER: The Stolen Pigeons