Forest and Bird is asking for the public's help in recording sightings of the kereru, or New Zealand wood pigeon.
Forest and Bird says kereru can be found throughout New Zealand, but their numbers are falling.
The survey aims to identify the areas where kereru are found so predators can be targeted.
The organisation is asking people to note when and where they see kereru between 19 and 27 February and enter the details on the dedicated website, kererucount.org.nz.
Kereru are critical to maintaining native forests since they're the only bird that can spread the seeds of larger native trees like tawa and karaka.