thermic perch for bird in Thailand

[orchis]

Hi
I am looking to get a thermic perch for a small bird (grey-eyed bulbul);
she can't fly, I raised her from 3 days old, she's 6 months now
I see it's getting cold for her at night.
Her cage is in a room and covered with a blanket but I think the wall radiates cold.
Any ideas? Thank you.

[ProbPossConf]

Try hanging a LKS Dai-ichi incandescent lamp, 100W, in the cage only if it is not close to the bird.  Poultry farmers use this method to create warmth for their chickens.   I used it briefly when raising my baby sun conures.

[onebir]

Or a ceramic heat bulb?

(They don't emit any visible light; they can get hot enough to char/ignite some materials though.)