Here's an old incident, which supposedly took place in 1891. Two ladies in a buggy observed a strange creature. It boasted wings, a head with a beak and clawed feet. W.R. Benedict, writing in the Fortean Times, suggested it was a griffin.
Some of you may have heard of a beast called the Hippogriff. This is not a genuine mythical animal. It was made up by the Italian poet Ludovico Ariosto in his chivalric epic, Orlando Furioso.