06/29/2026
We're back with a (long delayed) bluebird nest box update. It's not a happy ending, so please feel free to keep scrolling if you need to! Swipe for some more nestling videos if you like - we didn't put anything gruesome in there.
When we last left off, the eggs had been laid, and a cowbird had added one of her own to the brood. We were concerned about the nest, but figured we'd wait and see.
The cowbird hatched first, and was later joined by four bluebirds. The cowbird was voracious, and when large enough, would post up right at the nest box entrance to snag food from the parent bluebirds.
But in the end, the cowbird fledged and four bluebird nestlings were left to get all of their parents attention. The parents were constantly foraging for food and fighting off marauding house sparrows.
One day, one of the nestlings was gone. It seemed early, but unfortunately the camera didn't capture the moment it left the nest. We were just happy to still have three of them.
Then, one morning, we were not seeing the parents. The motion alerts from the camera stopped coming as frequently. And two of the nestlings were completely still.
The camera showed that neither parent had brought food since 9pm the night before. We watched for another hour or so, and when there was still no sign of either parent, we called Wildcare, our local wildlife rehabilitator. They told us to bring the last nestling to them ASAP to give them the best shot.
Unfortunately, nothing could be done. The nestling was infested with bird mites and had to be euthanized.
It was an extremely sad and disappointing end to this experience, especially as we watched the parents finally return to the empty nest box post later that day. But the experience was valuable for being a demonstration of just how hard life is for young wildlife, and how incredible it is when they do survive into adulthood. Every memorable experience you have with an adult animal has been with a being that has beaten the longest of odds.