Who is Cloud Cats from Airborn and what is their importance?

Appearing similar to large albatross in the distance, the creatures possess a plumage that is a cloud white color enabling them to fly virtually unseen through the skies. They are curious creatures, easily six feet or more in length. Instead of feathers, they have fur and it's forelegs are similar to bat wings in that they turn into wings with a single claw at the leading edge of the wing. Their wing span is estimated at between eight and nine feet across and they have stubby rear legs with curved, sharp claws. The creatures are incredibly agile and the wings appear to be unusually versatile. They seem to be able to float on the air itself, so light that they needed move their wings, and able to sleep in that manner, aloft. They also have large incisors, and intelligent looking eyes that are flecked with green. They give birth while airborne, climbing to dizzying heights and then simply birthing their baby in the air, following it down and monitoring it as it learns to fly while falling.

The skeleton that Matt and Kate find is still clinging to the tree in which it died. It had collapsed on itself, and has a skeletal system similar to that of a bat. The lower bones appear to be wings with long, thin, finger like bones at the end. The creature is large, and its bones are porous to make them light enough to enable flight, with a wing span they estimate to be nine or ten feet in length. The breastbone has a keel of sorts to hold the ribs together and strengthen the wings. It clearly has five separate metacarpals, unlike birds. It has a long tail, and no beak. The Cloud Cat is like a combination of bat, panther and bird of prey.