Ruahine whio protector Janet Wilson is inviting the public to discover the Ruahine Forest Park.
The walk on March 29 is to celebrate whio awareness month.
Wilson and helpers will lead a short tramp to the Oroua River and explain the trapping work being carried out to protect the Ruahine whio (blue duck).
The Oroua is one of many catchments in the Ruahine Forest Park where whio are still found.
The Ruahine trapping programme controls stoats, which are the main predator of whio, and also helps protect other Ruahine wildlife including brown kiwi and kaka.