prophet still, if bird or devil

"No. 

He’s utterly delighted at the predicament this foolish beast has driven himself into due to carelessness— or perhaps the brat’s a little too sure of himself, or he could call it stupidity. Either way, the pale-skinned demon doesn’t given a damn, because he only has one focus, and that’s to achieve the height of power and to slaughter all who dare step a toe within his path of destruction. 

And what a fitting scene to encounter this monochromatic creature in, tall gray stones pressed into tight lines and for a moment he’s amused at the petty tidiness of these pathetic humans and their care for their deceased; how pathetic. None of it mattered, anyway, they’re just rotting bodies of the worthless and the weak. Colorless piercing eyes of bottomless black and burning white bore into the feather hollow before him, a grin slowly coming to those thin, cold lips stretching to an inhuman length and curling upward. He looks to be content, almost pleased by the appearance of the stranger, but the only pleasure this demon enjoys is that of chaos and warfare. 

“Lil’ far from home, ain’t cha?” 

Was hunger a reason? Any normal Hollow would have devoured the languid human souls that lingered among the gravestones, unable to accept their fate. But Corevon had simply loitered, watching them in their wandering. Though technically of the Hollow breed himself, an Arrancar's empty core and pining for spiritual energy surely had its differences. They were not mindless beasts, they had the burden of a growing conscience. Power fended off the hunger, transcended it. Corevon would not kill humans, he would not take their souls. 

Unfortunately for him, not everyone had the same sense of mercy as he did. That was why he found himself confronted by a demon in the from of a man. He had turned on his heels in order to meet a similarly-colored gaze. As white fingers went to draw its sword, bandaged ones did the same. Always defensive. The Arrancar's eyebrows furrowed as he tried to process what was going on, why someone was apparently attacking him. He would've understood if the man addressing him was a Shinigami, but he couldn't have been. Maybe his assailant was an enemy of Aizen, maybe Arrancars were more of a universal enemy than he had counted for. Whatever the case, Corevon was sure he could explain. There would be no need for a fight. 

Secretary Bird (Sagittarius serpentarius)

…a unique species of bird related to raptors, found throughout the grasslands of Sub-Saharan Africa. Secretary birds are nomadic and are usually found on the savanna or in grasslands where they spend their time hunting for snakes, insects, birds, and mammals (they also have reportedly taken young gazelles). Using their long legs to deliver the killing blow, they will also user their legs to stomp on vegetation in attempt to flush any potential prey out. Although they are primarily terrestrial secretary birds are surprisingly accomplished flyers. Secretary birds have immense cultural significance in Africa and are featured on many symbols throughout Africa.

Phylogeny

Animalia-Chordata-Aves-Falconiformes (Accipitriformes)-Sagittariidae-Sagittarius-serpentarius