We had barn swallows go to a great deal of trouble building a nest on our front porch a few years ago- It was indeed fun to step out occasionally and see what was going on. I tried not to bother them too much, but did make a few snapshots while they were there, from a ladder I took out to the porch. I think I lost their photos when my computer crashed a few years ago. So now you have step one the beautiful eggs - get out there occasionally and photograph the progress. It is so much fun to watch these wee ones grow.