Just Like In Far Cry 4

[Zema Bus]

As described in a paper published in April in Ecology and Evolution by Miranda and his colleagues, the attack occurred in October 2023 near an ecotourism camp along the Kourou River Basin in an area about 18 miles from the coast. A group of ten tourists and a guide were walking a trail toward a bathing area for people when they saw a harpy eagle perched on a branch about 20 feet high.

The eagle focused on the people, even bobbing its head as they took photos and watched. One 29-year-old woman, about 5 foot 6 and 114 pounds, walked back and forth on the path while taking photos. The rest of the group eventually left the woman and her partner behind. As the couple began to leave themselves, the adult eagle attacked, swooping in toward the woman. She immediately curled into a ball with her hands on her face as the eagle grabbed her skull in its talons.

From smithsonianmag.com

[Grogan]

It sounds like they overstayed their welcome. Ruining its hunting, walking back and forth, taking pictures... the eagle got pissed off. When the crowd thinned out it probably liked the odds better and struck.