The snow owl can heal other Dinos with its frost attack

They dont have the ability to pick up dinos, but, they can go extremely fast, especially when inprinted when swooping. If you want a fast flyer with a decent amount of weight and fairly high stamina, this is the one you've been looking for.

They gain speed when imprinting??? TAKE MY MONEYY

The Snow Owl’s healing ability is really good for farming blood packs. Just use the syringe as much as you can, then jump on the owl and heal. Bring a lot of food as the healing drains your hunger a lot.

They can thermally detect any living thing around you giving a strong pvp advantage. Like a night vision with wings. Plus they can put you and your allies in stasis and heal you whilst being an ice cube. Decent airborne mount -

You can use a snow owl to head a baby wyvern instead of getting it milk

Basically the product of an Argy (high weight and looks like one, minus the corrupted face), Daeodon (healing), and Griffin (dive attack). I would pick these over almost any Extinction creature, besides Velonasaur. And yes, this includes the Managarmr.

Can walk backwards, unlike an argy. Mic drop

Use these guys to tame quetzal
Freeze the quetzal in the air then put gates on it