A cubic centimeter (cc) is volume which is a measure of the displacement of the engine. This is the total volume of all the cylinders (no. of cylinders x cross section area x stroke length) 1000 cc = one liter. so a 1500 cc engine is the equivalent displacement of a 1.5 liter engine.
The trumpeter swan (Cygnus buccinator) is a species of swan found in North America. The heaviest living bird native to North America, it also is on average, the largest extant species of waterfowl with a wingspan that may exceed 10 ft (3.0 m).
According to the suit, a 'mute swan is one of the heaviest flying birds, with males averaging about 24 to 26-pounds'. The birds are also extremely aggressive and 'attack by smashing at their victims with bony spurs in the wings, accompanied by biting with their large bill,' the suit added, according to Chicago Tribune.