From southern Africa.
The world's biggest hornbill is the Southern Ground Hornbill (Bucorvus leadbeateri). A large male can be up to 129 cm (51 in) long and weigh 6.2 kg (13.6 lbs).
They use their size to catch insects, lizards, mammals as large as hares and any other meaty thing they can get their beak around.
Just like Velociraptors! Only more scary because they're black and red.
More on the Southern Ground Hornbill.