Well, I’ve never seen or heard of anything like this before: a building of sequential nests on top of each other, with the first ones uninhabited. This comes from the Erie Times-News in Pennsylvania via alert reader Mary.
The story first:
Camille Hardner has a few guests living on her porch — a family of robins living in five nests stacked on top of each other.
Hardner, of East 29th Street, said the parents built the five nests, one on top of the other, before the female robin laid her eggs. “It was quick. The pair built five nests in two days,” Hardner said. “Maybe she was trying to get out of the wind.”
Hardner said she believes it is the same pair of robins that built a single nest on her porch in 2013.
“I haven’t yet had anybody tell me that they have seen a robin build more than one nest,” she said.
Have a look; there are two large chicks. And, if you know something about birds, provide a hypothesis. (Wind sounds okay by me.)