@NickAVD
Currently here is no spring fever time anymore, but hiding 1 - 2 days per week despite being awake, he does this all year round (brumation is another thing). I've read there are dragons who aren't using caves or hides at all - tell this Taco

How Taco signalizes he wants out: As his enclosure opens from the top, he has (quickly) learned I can only get him out* if he's on the branch or climbing wall on the right side (so: front, up). He then goes up there and looks at me. When I then reach in, almost sure he really wants out, i.e. steps up.
*In an emergency, I could get him out from everywhere but might need something to access him. But to "nicely" get him out: Only from "front, up".