A New Hampshire wildlife biologist says that the spring turkey population appears to be robust, despite the record number of zero-degree days this winter. Saturday marks the start of the annual Youth Turkey Hunt Weekend. Turkey biologist Ted Walski says sightings of flocks of wild turkeys suggest they weren't affected by the frequently frigid winter. He expects the spring turkey hunting season to be as good as or better than last spring, when hunters took 4,550 turkeys. Turkey season for adult hunters runs from May 3 to May 31. Youth and adults must have turkey licenses, which cost $16 for residents and $31 for non-residents. Licenses allow the taking of one gobbler --a male turkey--during the spring and one turkey of either sex in the fall.