The flag of Louisiana consists of a heraldic charge called a "pelican in her piety," representing a mother pelican wounding her breast to feed her young from the blood. The mother pelican's head and outspread wings covering the three pelican chicks nested below her form a stylized fleur-de-lis, another emblem of similar significance often depicted in Louisiana. This symbol, emblematic of Christian charity (and Catholicism), is also found on the state seal. On the flag it is depicted above a ribbon with the state motto: "Union, Justice, and Confidence". The current flag was adopted in November 2010, a revision of the original pelican design of 1912.

More Info: en.wikipedia.org