It's almost a tradition for birders to complain about their field guides: a particular variation of plumage - male, female, juvenile, mating - isn't shown; a rare bird is missing; or, alternatively, a lot of guides have so much about the occasional migrants you never see that there isn't enough space for adequate coverage of the common birds you see quite often; and so on.
Over the years Paul Scofield and Brent Stephenson, two of New Zealand's leading birders, have been among the complainers and now, with the help of Auckland University Press, they've done their best to provide the perfect guide.
Their book is lavishly illustrated with photos - Stephenson is also a top bird photographer - showing a range of angles and stages of the plumage cycle; there are generous descriptions of appearance, calls and behaviour, tips on how to differentiate between similar species and, as a delightful bonus, notes on the origins of Maori, English and scientific names. Rare vagrants are covered in a smaller section at the back.
The result is a superb guide to New Zealand birds and, unlike some, as strong on seabirds as on those of the forest.
If you're interested in our birdlife, either identifying the species you see or finding out more about them, this would be a wonderful book to have at home.