He said "cutover" pine forest is a favoured habitat of the kārearea, meaning forestry companies often have to change their plans around nesting birds.
"The Forest Owners Association and Wingspan have agreed on best practice guidelines for logging crews and forest managers to follow in working in areas where falcons may be present, and the national environmental standards for plantation forestry add extra protection for the birds," he said.
He said the delay will be until the kārearea's eggs have hatched and the chicks have grown enough to leave the nest, estimated to be about 75 days after hatching based on advice from the Wingspan National Bird of Prey Centre.
"In this situation, with log prices at a low point and there not being great urgency in building this particular road, delaying construction was an obvious decision and will not impact on financial returns," he said.
The kārearea's status with the Department of Conservation is "at risk-recovering" for its Bush and Eastern forms (found in the North Island) and "threatened-nationally vulnerable" for its southern form.
The Department of Conservation estimates between 5000 and 8000 birds remain in total.