There’s increasing backing for the “terrestrial stalking” model analogous to Storks. Where in they’re mostly ground based, and chase down small prey.
And while I dunno that “nimble in the air” is the idea but the consensus these days seems to be they were capable flyers fully capable of taking off from the ground.
I think the current idea is “quadrupedal launch”. A lot of the idea that these guys couldn’t truly fly, or couldn’t take off from the ground is down to the idea that they’d be too large to take off from a dead stop by flapping.
The idea is that they were very adept on the ground. And would run and bound till they’d gotten enough speed to take off.
