Annual Bird Nest in Our Propane Tank Cap

We have a blackbird or Magpie that nests each spring inside the cap of our propane tank. It lay eggs and raises it's young by entering/exiting through a hole located on top of the cover.  Despite Carter's daily visits to the nest, the bird still perseveres and successfully raises a clutch. Tonight, I decided to capture a couple pictures of Carter checking in on the little ones.