So Cook and those who followed him thought it would be a good thing for the country, and for the Europeans who might come later to live in it, if the best and most useful animals and plants which occurred in Britain were brought to New Zealand. They were, then, the pioneers in starting the introduction of European forms by giving the Natives pigs, goats, fowls, and seeds of several plants. Other animals and plants were brought here from time to time, and as white people increased in number, and gradually occupied much of the land and brought it into cultivation, these introduced forms in certain localities soon displaced many of the native forms. All the thickly peopled and settled parts of New Zealand are much more like parts of Europe as far as animals and plants are concerned than they are like the New Zealand which Cook knew. The reason is that wherever white men go to settle they take with them certain animals and plants, which they keep and cultivate. Besides, as already said, a great many things come into the new country with the immigrants--things which are not wanted, perhaps, but which follow white men wherever they go--and these things frequently become very common. We call the plants “weeds” because they grow where they are not wanted. But we have no name for the uninvited animals--mostly small--which thus come into the country, until perhaps they become very common, and then we just call them “pests”--nasty hurtful things to be destroyed and got rid of.
Now, if we are going to study the natural history of the country--both its native (or indigenous) and introduced animals and plants--we must put away from our minds the idea of “weeds” and “pests,” and look at and think of them as wonderful works of creation, full of beauty and interest. All nature is full of beauty, and if one looks for this it will be found everywhere. It will also be found that the study of the book of nature is unending. It does not stop, like the story of a book, but the more one learns and the more one comes to know the more one will find fresh chapters opening. If you are a naturalist, a true lover of Nature, and study her for half a century, you will find at the end of that time that you are only beginning to learn a little about the wonderful things which occur and exist in this wonderful world in which we live.