The hunt runs through Oct. 11 for all licensed hunters who are 15 or younger.
The weeklong hunt opens a half-hour before sunrise statewide and continues to 30 minutes after sunset.
Youth hunters must be accompanied by a licensed hunter 18 or older. One adult may accompany more than one youth.
The daily bag limit is three rooster pheasants, and the possession limit is six after the first day, except on wildlife management areas where pheasants are stocked. In WMAs, the daily limit is two roosters and four in possession.
Pheasants will be stocked on the Payette, Montour, Fort Boise, Niagara, Sterling and Market Lake wildlife management areas before the youth hunt opening, Fish and Game said.
The regular pheasant season opens Oct. 19 in Southwest Idaho and goes through Dec. 31.
Shooting hours start 30 minutes before sunrise except in the Fort Boise, C.J. Strike, Montour and Payette River wildlife management areas, where shooting hours start at 10 a.m.
Idaho Fish and Game releases pheasants at nine wildlife management areas in southern Idaho: Fort Boise, Payette River, Montour, C.J. Strike, Sterling, Market Lake, Mud Lake, Cartier Slough and Niagara Springs.
To hunt pheasants on those areas, all hunters 17 or older must have a valid WMA Upland Game Bird Permit in their possession.
All upland game hunters are required to wear a minimum of 36 square inches of hunter orange during the pheasant season when hunting on wildlife management areas where pheasants are stocked. A hunter-orange hat meets the requirement, according to Fish and Game.
All hunters must have a valid 2013 Idaho hunting license as well.
Ring-necked pheasants are found along the Snake River plain from the Oregon border to south-central Idaho.