Do Minors Have to Have Hunting Licenses?

Not under 16. If 16, they have to have gone to Hunter's Safety, and have a licence and duck stamps. I think the caveat is if they are with thier parent or guardian, they don't have to have hunter's safety...but I could be wrong

From the 2012-13 LA WLF Waterfowl Regs:

LICENSES
Resident Waterfowl Hunter:
In addition to a Hunting License, any resident age 16 to 59, must carry a valid Louisiana Duck License, a Federal Duck Stamp signed in ink across the face and a Louisiana HIP Permit. Lifetime license holders must also have the Federal Duck Stamp and HIP permit. Residents who turned 60 after June 1, 2000 are required to have a Senior Hunt/Fish License, a Federal Duck Stamp signed in ink across the face and a HIP permit.

Non-resident Waterfowl Hunter:
In addition to a Non-Resident Hunting License, nonresidents must carry a Non-resident Louisiana Duck License, a Federal Duck Stamp and a Louisiana HIP Permit. Non-resident life-time license holders must also have the Federal Duck Stamp and HIP Permit.

To answer your question, under 16 they don't need anything, just you by their side.