What did the Dromornis Stirtoni eat?

Dromornis Stirtoni eat plants,bugs,rocks and dinosaurs and plenty more. they do not drink water they drink blood from when there kids die by T Rex and plenty more. they do not drink water because if they do water goes down there body and into there heart because the small droplets move into the gaps that they get hert me dinosaurs and than it goes past it and into there haert