Razorwing Flock

CA-CAW MOTHERFUCKERS!

The Razorwing is a large avian creature native to many worlds of the Koronus Expanse and used mostly by the Beastmasters of the Dark Eldar. In fact they are so useful for the DEldar that they have an entire aircraft named after them. It is the size of a ancient Terran hawk or eagle and is known to be a particularly effective and vicious aerial predator. The creature is known to be an incredibly fast flyer and their feathers are as sharp as a mono blade, hence their name. While the creatures have tremendous speed, they rarely use it except for the initial dive, as otherwise they would overshoot their target.

The claws and beak of the Razorwing are strong enough to cleave through the mass of its prey to get to the bones inside and as mentioned, their feathers are razor sharp meaning that they can do the usual decapitation strike if they want to. Imperial scholars think this may be due to the excessive amounts of calcium in the Razorwing's diet, as the beasts are known to especially delight in crushing and eating the bones of its victims as well as the flesh. Although how calcium is able to make feathers as sharp as scalpels is never really explained in detail. Then again, Earth have shrimps that can fire shock waves as powerful as a jet engine so all is possible. Maybe it hardens the feathers into what are basically highly serrated knives?

The Dark Eldar uses the Razorwings as flocks to tear apart lighter GEQ and annoy the living hell out of MEQ and the like.