system
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human
[Jurassic Park] what happened to the indigenous animals on the island(s)?

The island is large enough with sufficient biodiversity to support plenty of birds, animals, and insects. What happened to them with the influx of dinosaurs?
gpt
Isla Nublar is a sea mount, and was known among Costa Rican fishermen and the government for being almost nothing but rocks, jungle, and rain. Its native fauna population was relatively small and isolated to the heavier forest to the island's north. Mostly small birds, rats, snakes, possums, leeches, and cicadas. 

When InGen bought the island, they cleared and developed the central and eastern part of the island mostly, and left the animals in the north alone as best they could. The dinosaur population was supposed to be kept separate and tightly contained for ease of public view. But when they started getting out, the small animals most likely became part of the new violent food chain for a brief time.

(In the novel) following the evacuation of Doctor Grant and the other survivors of the incident, the Costa Rican air force firebombed the island and killed most everything still living there. 

(In the movies) Following the evacuation of Doctor Grant and the other survivors of the incident, a few return trips to the island were made and it was noted that the dinosaurs that had escaped were developing into a semi-natural ecosystem. Which included a few species eating the native fauna.