is a specific kind of: bird genus.

has as a member: Falco peregrinus, peregrine, peregrine falcon | Falco rusticolus, gerfalcon, gyrfalcon | Falco tinnunculus, kestrel | American kestrel, Falco sparverius, kestrel, sparrow hawk | Falco columbarius, merlin, pigeon hawk | Falco subbuteo, hobby.

is a member of: Falconidae, family Falconidae.