They aren't tamed raptors, SS has said they are not tamed.
This trailer tells me he trains raptors, they help him, then super mega dinosaur escapes but can communicate and other dinosaurs help it, flying beasties and raptors go crazy and turn on everyone, that sound about right?
I'm still in though cos well...dinosaurs.
so long as they don't speak.
They are trained in as much as lions and tigers are trained. They are super aggressive wild animals and much like in the first film where Hammond says the dinosaurs imprint on the first person they come into contact with I'm guessing Chris Pratt character looks after them from birth so it's more a relationship of convenience and trust than them being trained.
From the trailer it looks like Indominus Rex escapes into the restricted zone of the old park and Chris Pratts raptors meet up with the wild raptors from the original park who live there hence why in the trailer it says "somethings wrong...they are communicating". I'm guessing the 'trained' raptors talk to the wild raptors who then turn on Chris Pratt.
they will speak in dinosaur language, with subtitles.

Looks naff. The first was brilliant, the rest have been bum, this looks no different.
Looks naff. The first was brilliant, the rest have been bum, this looks no different.