Some of these questions are pretty tough.
From their descriptions,
Deinocheirus was an omnivore,
Dilophosaurus was an ambush hunter,
Ouranosaurus used it’s sail for social reasons and possibly some other mysterious reason (that gives me an idea for a drawing).
Diloracheirus could possibly change the colours on it’s sail.
Another important angle is that many if not all of the JP dinos, especially ones descended from social animals have botched social lives and behaviours due to their hybrid genomes. This is what happened with the Velociraptors in the Lost World novel.
As for diet, i would go with omnivore but being mostly a plant eater that sometimes will eat eggs, insects and other very small animals when given the opportunity. It’s body is not really built to hunt, It would suck at It
It’s quite possible that it would use its claws to shred the meat off the carcasses of their prey. Obviously not large prey, since it had no teeth to aid in taking them down. Maybe small mammals or baby dinos to easily slap and claw to death.
Also eggs and fish like other people have been saying.
I think as far as sensory abilities go… Imagine them as fortified nerves - by that I mean they are sensitive to vibrations in the ground and pressure in the atmosphere. They can tell if an enemy is coming, and if the weather will be good or bad. It would be what makes them so hard to track.
But, because they are so sensitive, striking them hard enough would cause numbness. But it has to be hard enough - it wouldn’t literally be like an exposed nerve, where a single blow of the wind brings you down like a piece of paper
That’s why I say “fortified”, cause they can take a bit of damage before the nerves become detrimental to the animal.
