I concur; that seems to be another heron with an appearance that doesn’t closely match any New Zealand species.
Yes, I noticed the label about the book being ornithologically accurate as well. I’m sure that it wouldn’t matter to their target audience just how realistic the poems and art truly are, of course.
This thread has actually included goofs where New Zealand birds have been incorrectly labelled with the name of a different New Zealand bird for a long time now.
In the case of these interesting kingfishers, I actually did ask the artist about them. The artist informed me that these kingfishers were intentionally given a hybrid appearance, with the body and colour divisions of the Common Kingfisher but with colouration that is closer to that of the Sacred Kingfisher. The artist has made fully accurate art of the Sacred Kingfisher, too.

- Botan 1.png (2.66 MiB) Viewed 2572 times

- Botan 2.png (6.16 MiB) Viewed 2572 times