Sparrow

Mentioned among the offerings made by the very poor. Two
sparrows were sold for a farthing (Matt. 10:29), and five for
two farthings (Luke 12:6). The Hebrew word thus rendered is
"tsippor", which properly denotes the whole family of small
birds which feed on grain (Lev. 14:4; Ps. 84:3; 102:7). The
Greek word of the New Testament is "strouthion" (Matt.
10:29-31), which is thus correctly rendered.