The morning after I got back from my months long vacation, I went out to my balcony and saw many twigs at a corner of the balcony. It was kinda odd, but I thought to myself it must be from a storm while I was away. It happened before, many leaves and twigs being blown to my balcony during a rain and wind storm. But rarely only gathered in a corner. So the logical thought is that over the time wind would sweep them to the corner.
Then shortly after that, a pigeon landed on the rail of my balcony, stared at me as if it was wondering: "Who are you?" It stared at me for a very long time and then flew away. Few days later, I went out the balcony again, this time I looked up at my wall mounted a/c unit and saw a pigeon in a bird nest on top of it. Now that all make sense now, the twigs, the pigeon now the nest.
So I began to feed the pigeon. Yesterday I say the mama pigeon on a tree branch across from my apartment, hours later a larger more stocking looking pigeon joined her, which I think must be the papa pigeon. Mama pigeon immediately gloomed papa pigeon, a very loving scene. This was the first time I saw mama pigeon away from the nest.
This morning I went out to the balcony again. Looked up at the nest and saw a baby pigeon next to mama pigeon! I guess the egg must have just recently hatched, so that mama pigeon could leave the nest and took a break.
Good thing I rarely need to use my AC at all even in the heat of the summer, so the happy family will have a safe and quiet place to stay for as long as they want.