I would probably not have done another nest check the very next day, but I had to take the rack down to remove the remains of a house sparrow that was blocking one of the gourds. So while the rack was down I looked in the other 7 gourds too.
Yesterday I found that ones of the gourds had brown, dried leaves in it. They were pieces of elm leaves and had undoubtedly been brought in green, but they were all pale and tan color. I was wondering if the nest had been abandoned by the martins. But today there was an egg. I was pretty pleased to learn that dead leaves did not necessarily mean abandoned nest.
The nest in which yesterday I found a female brooding, today it had 5 eggs in it. A third gourd had some straw and one green leaf, which I hope means a nest will be along there soon also. Three families seem like a pretty good chance that the new colony might take hold and come back next year.