President Theodore Roosevelt in 1905. In a 2026 study published in Animal History , Vanessa Bateman explains that the gift was a group of wapiti, another name for elk. Ever tried to untangle a family tree that got more and more knotted as it branched out? New Zealand ’s deer have a similar problem, and it started with a gift from U.S. Over the course of the 20th century, these deer were seen first as game animals, then as an ecological threat, and finally as farm livestock, explains the study. Each of those labels was made harder to apply by their mixing with red deer.
Bateman’s research follows the deer through the 20th century. She tracked how people responded to them using archival records, government reports, oral histories, and visual sources. The study shows that the animals did not keep one role for long. At first, they were acclimatized game. Later, they were treated as an ecological menace. Finally, some became domestic animals. Bateman also looks at the tools used along the way, including rifles, helicopters, tranquilizers, nets, and farms. They transformed with the animals, and tied deer behavior into government and commercial systems. This story is not simply about biology. It’s also about how people valued animals at different points in time. Together, the records tell a long story of how New Zealand valued these animals. The hybrids did not form one tidy group. The paper describes red-like hybrids and wapiti-like hybrids, with a near continuum of forms between the two parent species. Even with careful measurement, they are difficult to sort. Their skull-based groups also corresponded to descriptions based on coat, size, and other external features. The authors also determined that the wapiti population in the area was in poor physical condition. Hunters were also in the picture. The authors report that experienced hunters were very selective in culling red deer and hybrids, yet the population still ended up dominated by hybrids, This suggests that the wapiti bulls’ mating advantage outweighed whatever hunters managed to cull. Bateman makes the broader point. It is difficult to say whether an animal that is part elk and part red deer is a game animal that people want to hunt, an invader, or a resource. That uncertainty helps to explain why the deer were treated so differently over time. Still, there are limitations to both studies.
Together, they show how a single gift in 1905 led to a long-running classification problem.
She says the tools did more than control the deer. She says hybridization blurred the line between wild and domestic, and between pest and resource. One is a historical analysis, the other a skull study from the 1970s, neither of which tells us what would happen to the deer today.
