There is a bird's nest on my balcony in the wall above the door with birds who breed. They have fledglings who already hatched. (I assume this because I sometimes hear quiet sweet chirping.) I sit on my balcony often for breakfast and sometimes for lunch almost every day. When I do this, the birds stop feeding their fledglings (because they are afraid of me or because it is some natural instinct to not reveal their nest).
A friend of mine (who installed a birdhouse on her balcony) told me that the fledglings die if they are not fed constantly. She told me that she doesn't use her balcony anymore (or at least not longer than 5-10 minutes) because of this.
So my question is: Do fledglings die if they are not fed constantly? How long can they survive without food? (like 30 minutes or so)
I would like to use my balcony because I really enjoy having my meals on it but I also don't want the fledglings to starve.