TLW SFX - Parasaurolophus

In The Lost World JP Movie, InGen originally breed 28 Parasaurolophus on Isla Sorna back when the labs were still in production. They transported a group of 15 Parasaurolophus to Jurassic Park. But after the incident of 1993, Operation Clean-Swipe was a go in 1994. The reports states the following:

“They appear to stay pretty close to other large herbivores for protection.”

But after the hurricane came to the island, they released all the dinosaurs in order for them to mature on their own. They seem to located in the open plains of No man's Lands and the lake site with other herbivores like, Gallimimus, Pachycephalosaurus and even sauropods like Brachiosaurus and Mamenchisaurus.

In Michael Crichton's The Lost World Novel, They have a symbiotic relationship with the Apatosaurus, with the Parasaurolophus having sharp-vision to look out for predators while the other dinosaurs grazing and drinking water. They also travel in groups when migrating around the island in search for either nesting ground or food.