The Collaborative International Dictionary
Deathbird \Death"bird`\, n. (Zo["o]l.) Tengmalm's or Richardson's owl ( Nyctale Tengmalmi); -- so called from a superstition of the North American Indians that its note presages death.
Wikipedia
Deathbird (Cal'syee Neramani-Summers) is a fictional character appearing in American comic books published by Marvel Comics. She is a supervillainess, an adversary of the X-Men.
Deathbird is part of a segment of the extraterrestrial Shi'ar race that possesses talon-tipped wings. She is the hated sister of the Shi'ar empress Lilandra Neramani, the mother of the Shi'ar warrior, Deathcry, and constantly seeks to usurp her sister's throne. She is also a sister of D'Ken, the first depicted ruler of the Shi'ar.
Usage examples of "deathbird".
The leading deathbird swooped toward him, its antlers spread like a phalanx of deadly spear tips.
The deathbirds had been lurking among the shattered pillars around the well, but now they flew, their deadly antlers angling toward those who would threaten their master.
Armored assault vehicles were also parked there, the Hussar Hotspurs and the AMACs, not to mention disassembled Deathbirds.