(Chinese bird species) house sparrow (Passer domesticus)

(Chinese bird species) russet sparrow (Passer rutilans)

(Chinese bird species) Eurasian tree sparrow (Passer montanus)

lit. to dissect a sparrow; fig. a preliminary test on a small sample

(Chinese bird species) Spanish sparrow (Passer hispaniolensis)

(Chinese bird species) saxaul sparrow (Passer ammodendri)

the Great Sparrow Campaign or the Four Pests Campaign, one of the actions during the Great Leap Forward [[大躍進|大跃进<Dàyuèjìn>]] aiming to eliminate four pests: rats, flies, mosquitoes, and sparrows

lit. to catch sparrows blindfolded (idiom)

The sparrow may be small but all its vital organs are there (idiom).