The birds that we work with that have crests, like Larue the crested caracara here, or the cockatoos and magpie jay can use their crests as part of communication. Larue raises and lowers his in context with other variables, like the color of his facial patch and it gives us a pretty good idea of what will happen next. Owls with plumicorns, ie horns or “ears” (not really ears, but the feather tufts that stand up) also use these feathers for communication and Guinness the Eurasian Eagle Owl is quite clear in his messaging service to that effect

The birds that we work with that have crests, like Larue the crested caracara here, or the cockatoos and magpie jay can use their crests as part of communication. Larue raises and lowers his in context with other variables, like the color of his facial patch and it gives us a pretty good idea of what will happen next. Owls with plumicorns, ie horns or “ears” (not really ears, but the feather tufts that stand up) also use these feathers for communication and Guinness the Eurasian Eagle Owl is quite clear in his messaging service to that effect - __krishh__ (@@__krishh___) on Josh: India's #1 Short Videos App