a young male falcon, an eyas is a fledgling
A male Peregrine (a 'tierce' or a 'third' smaller than a female).
The male peregrine, from the French "tierce," meaning third. The term is often used for the male of any species of hawk.
Essentially the male peregrine, but, if qualified, the male of any longwing. Sometimes also used for the male of a shortwing or broadwing, however never for the male Sparrowhawk which is called a musket.