Biodiversity ranger Sandra Burles said she was pleased by the efforts.
"You can easily see where vehicles have made an effort to avoid the colony," she said. "Vehicles have been using the beach when possible, and staying on established tracks."
The ongoing restoration programme at Onoke spit also included pest, animal and plant control within the dunes and along the gravel spit. A third planting day is planned for autumn 2013. The Caspian tern has a threat classification of 'nationally vulnerable'.
Community groups and sponsors involved in Onoke Restoration include; Friends of Onoke Spit, Wharekauhau Estate, Palliser Estate Winery, Kahutara School, Rotary Group South Wairarapa, Ornithological Society NZ, Forest and Bird, Pete Monk, Greater Wellington Regional Council, local iwi and Wairarapa volunteers.