The sign next to the hornbill said that "these birds act as helpers to assist in feeding." We didn't know that it meant it likes feeding other species! After a little bit of teasing, the peacock got to eat the cricket.
At the end of the day, we swung by this hornbill to say good-bye, and it offered us a leaf from its beak! (but we couldn't reach it because there was a low wall between us and the cage.) This was our favorite bird there.
Side note: I really hate zoos. There needs to be a modern way to present animals not in tiny cages. This zoo had a lot of birds for some reason, and many of them were in cages all by themselves. We found a lonely cockatoo digging a hole trying to escape. I pulled out my phone and played it cockatoo noises, and to see it perk up and listen to it was depressingly sad.
of course, in the wild I doubt it would go around feeding other species. lock it in a cage and the hardwired behaviour still needs an outlet. that becomes the peacock next door and humans that approach. poor frustrated bird :(
