Similar word to yardbird:

bad actor, black marketeer, blackmailer, con, convict, crook, culprit, delinquent, desperado, deuce, evildoer, ex-con, felon, fugitive, gangster, guerilla, heavy, hood, hoodlum, hooligan, hustler, inside person, jailbird, lawbreaker, malefactor, mobster, mug, muscle, offender, outlaw, racketeer, repeater, scofflaw, sinner, slippery eel, thug, transgressor, trespasser, wrongdoer, yardbird