Yes.
But seriously, all but kiwi are terrifying in their own way.
For ostriches, we had to get them inside when it was cold and wet because they slip on ice and it’s real bad. To do so, we had these wooden shields (just plywood sheets with door handles nailed to them) and we had to push them in like Roman soldiers. There were 4 of us closing in and they were right at the door to their barn and our male went in, but our female didn’t want to and literally jumped directly over me. I’m a little under 5’9” and this 300+ pound, 7 foot tall bird jumped over my head. I thought I was gonna die.
Emus and rheas aren’t awful, but they can be pushy, especially males. Generally though we work with them only as babies and young adults since we rented them from emu and Rhea farms as chicks and sent them back after the season.
Cassowaries are legit scarier than the velociraptors in the Jurassic Park movies are made out to be. They’re 6 feet tall, weigh 200+ pounds, and their claws can and have disemboweled people and other animals. My first day at the zoo, literally day 1 ever at 16 years old, I was handed a riot shield and had to move them into a trailer to be brought out of their heated winter barn into their summer enclosure. The male was fine, but I watched our female jump up and kick the head keeper’s shield and sent him flying back. Dude was like 6’2 and jacked, but this murder Turkey launched him about 6 feet back. It was a terrifying first day.
Luckily, all of these birds are dumb as hell though and as long as you don’t Spook them, you’re fine. I rarely had incidents (though that female cassowary hated men so we didn’t work with them except for moving or vet work) with any of them, but I’ve heard horror stories