Leviticus 14:4

the priest shall order that two live clean birds, cedar wood, scarlet yarn, and hyssop be brought for the one to be cleansed.
BSB · Berean Standard Bible
Then shall the priest command to take for him that is to be cleansed two birds alive and clean, and cedar wood, and scarlet, and hyssop:

Note birds: or, sparrows

KJV · King James Version
then the priest shall command them to take for him who is to be cleansed two living clean birds, cedar wood, scarlet, and hyssop.
WEB · World English Bible
then shall the priest command to take for him that is to be cleansed two living clean birds, and cedar wood, and scarlet, and hyssop:
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

two birds
or, sparrows. The word {tzippor,} from the Arabic {zaphara,} to fly, is used in the Scriptures to denote birds of every species, particularly small birds. But it is often used in a more restricted sense, as the Hebrew writers assert, to signify the sparrow. Aquinas says the same; and Jerome renders it here the sparrow. So the Greek [strouthia,] in Matthew and Luke, which signifies a sparrow, is rendered by the Syriac translator {tzipparin}, the same as the Hebrew {tzipporim}. Nor is it peculiar to the Hebrews to give the same name to the sparrow and to fowls of the largest size; for Nicander calls the hen [strouthos katoikados,] the domestic sparrow, and both Plautus and Ausonius call the ostrich, {passer marinus,} "the marine sparrow." It is evident, however, that the word in this passage signifies birds in general; for if the sparrow was a clean bird, there was no necessity for commanding a clean one to be taken, since every one of the species was ceremonially clean; but if it was unclean, then it could not be called clean.
Leviticus 1:14; Leviticus 5:7; Leviticus 12:8
cedar
Leviticus 14:6, 49–52; Numbers 19:6
scarlet
Hebrews 9:19
hyssop
Exodus 12:22; Numbers 19:18; Psalm 51:7