<P> The badge of the Royal Air Force is the heraldic emblem used to represent the RAF which features an Eagle superimposed on a circlet which is surmounted by a crown . </P> <P> The badge was based on a design by a tailor at Gieves Ltd of Savile Row . It was first used in August 1918 and the original circlet showed a garter and buckle . The present plain circlet dates from 26 January 1923 when the badge was registered at the College of Arms and, it being noted that the garter and buckle were heraldically incorrect, a substitution was made . </P>

What is the bird on the raf badge