What is the scientific name for a quail?

There seem to be several scientific names for a quail depending on which exact species you are talking about. Here is a list of the ones I found. 1. This first one just gives the name "Quail" and gives this scientific name.

Scientific Name: Coturnix cotumix japonica (Related link 1) 2. Scaled Quail

Scientific Name: Callipepla squamata 3. Gambel's Quail

Scientific Name: Callipepla gambelii 4. California Quail

Scientific Name: Callipepla californica 5. Mountain Quail

Scientific Name: Oreortyxpictus 6. Northern Bobwhite (I am including this because in some areas this one is called a quail.)

Scientific Name: Colinus virginianus Reference material for numbers 2-6 above:

"Field Guide to Birds, Western Region"

Donald & Lillian Stokes

Little, Brown and Company

New York, Boston

ISBN: 0-316-81810-0

Copyright: 1996 by Donald W. Stokes and Lillian W. Stokes

First Edition