We had a robin build a nest under our deck one year. Same area (near the ceiling) where your robins built their nest! The 2 babies fledged and left in good shape. We took care not to approach or bother them. I would put mealworms out for them away from the nest. The parents would watch for me. Sometimes the father would trot up and look at me while I was watering the flowers. MORE MEALWORMS please! The parents did not return the following year. I think it was because raccoons and groundhogs started coming around for the bird food and worms. I used to store peanuts in a plastic garbage can out on the deck. One night a creature chewed a hole in the lid. I didn't know what kind of animal was doing this so I replaced it with a metal can/metal lid and wrapped a chain over it. The next day the ungrateful beast had urinated all over it! I stopped storing the peanuts (any food) on the deck. I also had to cut back on the number and type of bird feeders because they were climbing on these and knocking the food out. No more mealworms either as raccoons and groundhogs like these as well. We finally had to hire a trapper. The groundhogs were tunneling under our deck and I didn't like how bold the raccoons were becoming. The trapper advised us to seal all the open areas (lattice) around our deck to prevent future invasions. We trapped several raccoons and groundhogs, a skunk and a couple of squirrels and a rabbit. We released the squirrels and rabbit. I would like to mention that the trapper said trapped squirrels can be so desperate to get loose, that they will frequently break their necks trying to get out of these Havahart traps. The ones we had trapped didn't do this because we were checking the traps 3x a day and didn't give them a lot of time to worry themselves to death. Chipmunks were also a problem this year. Our neighbor said he had caught 15 of them this year alone. Did you know that chipmunks can weaken your foundation/sidewalks? Now I know why a section of our front sidewalk dropped.....:( I'm hoping the robins will try again next year.

Bird nests bring lots of bird poo especially at fledging time. We had a nest in our lilac bush and the day the babies fledged (I only saw one leave) they pooped everywhere on the sidewalk by the lilac bush. Haven't seen the babies since...the parents take them away and hide them in the woodsy area by us. We don't normally see them again until they are out looking for worms themselves when they are much bigger. We have a Coopers Hawk around here that normally gets a few Robin babies, saw one feather pile last weekend which looked to be a Robin. Not sure what nest it would be from though since there are Robins nest everywhere. Your babies probably made it fine minus the one but chances are you probably won't see them again, they don't stick around an old nest at all. Donna

Thinking it over and looking at evidence. I'm ruling out everything but Crows, Hawks, and Red Squirrels (for these 3 nests). The one nest that had been disturbed had chicken wire loosely surrounding it so a Raccoon (or other large climbing critter)would have left a bend in it. I am hearing the baby Crows begging however I have not heard any ruckuses from frantic parents. Maybe very early morning attacks? I cant do anything about the Crows but I can do something about the Squirrels (I don't want to) but if I find they are the culprits..........

In addition, you don't know what stage of incubation another nest would be in. So, if the incubation periods are messed up, the other eggs (or both sets) still may or may not hatch. I would just leave it and let nature take its course. Robins are robust and able to readily renest after a failed nest attempt.