What is the author's style in Chucaro: Wild Pony of the Pampa by Francis Kalnay?

Chúcaro: Wild Pony of the Pampa is a children's book, mostly for pre-teens. Consequently, the word choice and plot are very simple and easy to follow. The book contains many sketches of the main characters and events in order to enable better comprehension of the text. There are few words on each page. However, the author will, from time to time, throw in complex vocabulary words, perhaps in an attempt to encourage his reader to increase her vocabulary.