How sad. Anna's hummingbirds will sometimes take the materials from nests to build another. Some hummingbird species will reuse their nest, or build on top of their previously-used nest. Many nests are stretchy--by the time the fledglings leave, it has expanded too much to begin with eggs again. But if the female likes the site, she may build on top of the existing nest, sometimes returning to the same site yearly. But it sounds as if the conditions around this one are no longer suitable for raising young; maybe there was too little sun protection after the pruning or the exposed site caused the young to fall to predators. Since the conditions have been changed, I'm guessing the site is unlikely to be reused this year.

Hi! A couple weeks ago we noticed 2 Carolina wrens building their nest in our fern right outside of our kitchen window. We were so excited! Then a few days ago we no longer saw them around and sadly thought that they had abandoned their nest. This morning we were talking about removing the nest from the fern and when I peeked, I saw 5 eggs! Now we are concerned if they have abandoned their eggs :( Is this possible? We haven't seen them around at all. What time of the day do they incubate? Would it be possible that we are missing their timing? We are not morning risers. Agh! I'd be so sad if by any chance we scared them away :( We have been very respectful, however sometimes we would open the window. I do not know how long the eggs have been there. I thought that as soon as they were close to being done building their nest, they had left. Do they first build and then lay their eggs? Thank you so much!

I would wait and see which one they lay eggs in.

My phoebes had skipped a year of nesting in their usual place (above the porch light fixture near my office door). My mirror set-up had scared them away. I should have realized that birds do not "like" mirrors -- but I didn't think about it at the time. I did see a bird pecking all day at the mirror, looking behind it, then pecking angrily at it when seeing the "intruder" again. That bird came back the next day to peck at the mirror again. I felt sorry for him wasting his time. But, I didn't think about the phoebes reaction being the same. So, they never nested there last year. I removed the mirror, but they still did not return to nest there this spring. Instead, they nested on another side of the house -- under our raised deck (same as last year). But, after the 1st brood was fledged -- THEY MOVED BACK TO THEIR OLD NESTING SPOT! So, the phoebes apparently got fed up with the disturbances created by our toy poodle (who is let out onto our raised deck several times a day.) The poodle would be walking directly over their nest, and possibly pissing over their nest. The nest building started May 25, 2021 and completed on the 30th or 31st. The mother was sitting on the nest on May 31, and there were 2 eggs in the nest. So, the first egg was likely delivered on May 30. By June 3, there were 5 eggs. All the eggs hatched on June 17 -- so, exactly 2 weeks after the last egg was laid. Interesting that all eggs hatched on the same day, even though each egg was laid a day apart. When I peeked, all the shells were gone. So, even tho I didn't see it, I assume that the parents removed all the egg shells. I also see the parents flying away with baby-bird poop. The poop looks like worms, and the parents carry it away from the nest. They either drop it or eat it (it is undigested food). Today is June 23, and the parents are often very busy bringing food. The bay birds are still too small to see without using a mirror over the nest. Here is a link to a very interesting article from 1937, detailing the observations of nesting habits of phoebes as studied over a 3-yr period. A few interesting details: Female does all the nest building. Incubation starts at varying times - sometimes after 3rd egg, sometimes after 4th, sometimes after 5th. The male apparently does none of the incubation. After fledging, the young birds remain close to the nest, getting farther way as the days pass. Both parents still feed the young after they fledge -- feeding them for periods of up to 18 days. Reliance on the parents gradually decreases. The parents may eventually show harsh treatment of the young to get them to go out on their own. Interesting. https://sora.unm.edu/sites/default/files/journals/auk/v059n03/p0410-p0417.pdf