My robin that nested 28" off the ground in the open has fledged two. She didn't do it on her own. I built shelter around them for sun protection as they were hanging out of the nest with mouths agape. I also built wire caging below that may or may not have deterred predators. On top of this, I twice put one back into the nest that she clumsily knocked out; one of the times the young was very cold, I didn't expect it to live. I was quite hurt when she continued to scold me upon approach, I felt I was part of the family (the big ugly well meaning uncle). They are on their own now; their chances aren't good, especially since they are likely alive now only because of my meddling, interrupting the natural survival of the fittest. I have never had enough martins to fill my martin house, but always have martins, and generally they have shared it with a house sparrow. There would be some conflict but cohabitation was worked out. This year, with only 3 pair of martins, I have a starling trying the tight spot out. They martins aren't happy, but not of large enough numbers to force the starlings out. I routinely evict the squatters. The activity doesn't seem to bother the martins at all. They sit on the wires while I drop the box to a manageable height and clean the starling debris with no complaining. I doubt they know what I am doing, but I like to think so anyway. Scott Marsh Lexington