The male peregrine falcon is known by its scientific name Falco peregrinus and is also commonly referred to as a tercel, which is a six-letter word. It is a large bird of prey that is found on every continent except Antarctica. The male peregrine falcon is typically smaller than the female and has a blue-gray back and wings with a white underside. It is an agile hunter and can reach speeds of up to 200 mph when diving for prey. The male peregrine falcon is an important part of the ecosystem, helping to keep populations of other birds in check.