The book covers the type of area and the tracks and trails where certain species are likely to be encountered. Particular species for each site are highlighted.

The book also lists the type of habitat, best time to visit, and the facilities and accommodation in birdwatching areas.

"The time was right for that [as] there's been a big upsurge in interest in conservation," Light told Newshub.

Light attributes the book's success to the rise in the bird population caused by the national pest-free 2050 goal.

"Whether or not we get there remains to be seen, but [it is a] fabulous thing to aim for."