The article said the humans have "culled" about 1000 of the monkeys. It's interesting that we use different euphemisms depending on who's doing the killing.
What the article describes is accurately described as culling, or killing for population control.
harvested lobsters with one claw have less commercial value so they are separated out. They are sold more cheaply and called "culls". A difficult entry level university course in an academic department like Chemical Engineering could be used to cull the class of students down to only those who are serious about pursuing the field; in such a case, the culls are not killed.
it's the nature of metonymy https://en.wikipedia.org/wiki/Metonymy that the word cull can take on extra meanings depending on the context.
Works for coyotes.