Why did the phorusrhacidae go extinct?

The Phorusrhacidae, or "terror birds," went extinct primarily due to environmental changes and competition. As the climate shifted and ecosystems evolved, they faced competition from emerging mammals, particularly large predators that filled similar ecological niches. Additionally, changes in habitat and prey availability likely contributed to their decline. Ultimately, a combination of these factors led to their extinction around 1.8 million years ago.