Bit late (and sincerely hope all is well) but wanted to say candles, or any open flames, and birds don't mix well. A bird basically can't hold it's breath, so to simulate their experience inhale - briefly and cautiously for your own safety - over a candle. Then imagine your lungs are 1/50th the size, so you just got that effect x50, and can't stop inhaling.
You'd likely be fine, if it's a sizable room and the bird can move away, but there are stories of birds dying to rooms with scented candles. It's not necessarily that the scent is immediately toxic, but the burning will be dropping the air quality in the room in a way a human won't notice but a bird can't escape or avoid, or even complain about in a way a human will understand (It'll go quiet, rather than draw attention). Going way back in the thread it's a bit like hairdryers - most are fine, and 99% not a problem, but a small number (particularly old ones) contain teflon, and can kill a bird if blown at them(!).
In general as a bird owner you need to be super-cautious of anything that gives off fumes. Birds are much, much more susceptible to them than humans, particularly in an enclosed space where they can build up, and the bird can't escape. It's generally not worth the risk to burn or heat anything in the same space as a bird (one of the main reason general advice is to never keep a bird in a kitchen).
palm down on the dish. Talk to him, tell him it is nice and warm. Let him observe that the water is shallow. 
Thank you for all you do!!
