The cave mention reminded me of something I’m PRETTY SURE I mentioned before, but Imma say again just in case
Blackfinch came from the Gaping Maw caves, while Falleniris came from the Eye-Out Thorns. They’re both used to and like their setting.
So they came together to their own cave and filled it with thorns. The thorns seem random but are actually placed like a maze one could easily get lost in if they don’t know the way.
That’s where they and their kits, Scab and Blight, live.
—
Waspbeak and Sapdew made a similar compromise. Sap likes living near water, Wasp at the thorns. So they found a wide pond with a decent, small island in the middle big enough for them to make a den and lay outside of it. Beneath the water’s surface, all around, are thorns buried deep in the mud, sharp edges poking upward. They can’t be seen by intruders until they’re already cutting in. They’re too deep and firmly in the sticky mud to be easily removed.
That’s where they, and their kit, Red, reside.
(Maybe Wasp shared some with Fallen?)