Bird Nestling - Day 1

My brother was praying this afternoon and found this on the window of the prayer room, just beside the joss-stick pot. An egg about one inches long! I think the mother's nest elsewhere has been destroyed by the frequent heavy rain lately. Notice that the nest is not even complete, only a few sticks and I guess this is an emergency case for her. I managed to take the photo while the mum was nestling a moment ago (at night) and I was like only 3 feet from her! She didn't flew away.

Earlier in the evening when my brother was praying, he said a pair of birds is noticing him from the fence, I think they were trying to build the nest when my brother leaves the room. It's not the common pipit, but this type of breed is quite common in Brunei too, anyone know the name? And is it common to have only one egg for this breed?

Being a chinese, and a bit superstitious, something came to my mind, especially that it's a prayer room that this bird is nestling. I mean of all places, why on the window of my prayer room near the joss-stick pot. I hope this means nothing, and even if it does, something good.