General What is the 'genus' of the Droyne?

As the title says.
Are they reptile, bird, or amphibian? (not sure if 'bird' is a genus) Oviparous for sure.
Endo or Exo-thermic?

IMTU, the Droyne are setting up a colony/settlement five parsecs away from the Scout base of operations. Contact was initiated by the Droyne themselves.

None of the above. They are totally unrelated to terran species and difficult to classify in those terms.

Their skin is leather like, they have hollow lightweight bones, and as far as I can tell they are warm blooded.

They have compound eyes.

They have three sexes, although each caste is significantly biologically different.

The drones (females) lay a clutch of eggs.

Young droyne are all very similar, the casting ceremony causes actual biological change.

If you HAVE TO force Droyne into a Solomani frame of reference for species, Droyne are something of a "chimera" that crosses over Solomani speciies traits.

It is (now) known that modern day birds (basically all of them) are the evolutionary survivors of dinosaurs.
So if dinosaurs are "lizards" and birds are "avians" then using that frame of reference, Droyne have more in common with "bird-like dinosaurs" without feathers (in Solomani species terms).

However, the compound eyes are more of an insectoid type of morphology trait.

So Droyne REALLY don't "classify neatly" into a single branch of the Solomani species differentiation (because Droyne are ALIENS ... go figure ).

If you HAVE TO force Droyne into a Solomani species classification system ... they're basically a "chimera" type alien that blends saurian, avian and insectoid together that is OBVIOUSLY NOT your typical Solomani species. They're REALLY alien.

As others have said, they're much more distant from any of those groups than a mushroom or gut bacterium and it doesn't add any reliable inference for other traits. In-universe science suggests "Omnivore/gatherer" should tell more about them.

It's a bit interesting that this group seems to be expanding. I don't think we see that often.