Corvallis, OR, United States
You can ignore the first mystery, it was a dead hummer at my feeder then after that I had a couple of nest mysteries, the still shots show what I was up against. First, a Black-capped Chickadee nest…and only one ‘hatchling’ with some four or five other eggs that never hatched. Second, a Western Bluebird nest that after the season was over I found a dead what I think was a female Violet-green Swallow in, underneath- and a couple of Bluebird eggs that never hatched. Two nest oddities.