Ok, so I'm going to give a hypothetical scenario that's a little one-sided intentionally, but I'm curious what the answer is by Objectivist logic.

Let's imagine there's some territory that's formed as a small nation-state built on objectivist principles. In this territory there's rare Fuschia Rhinos™. A group of hunters either from inside or outside this society have been hunting these Fuschia Rhinos™ unsustainably. They hunt them for their horns as a purely aesthetic luxury item or for quack medicine or something like that.

Most of the population would, as a matter of personal preference, prefer the Fuschia Rhinos™ to continue existing.

The poachers in question them on land that is currently un-owned but within the jurisdiction of the government.

Two questions:

• Is it rational for them to care?
• If so, what methods, from an objectivist standpoint, make sense to use to protect the Rhinos?

I'll say on instinct my guess would be for the second: Find someone willing to buy large swaths of territory, put a "no hunting" sign on it, then you have a casus beli if someone decides they can't read.