A second piping plover has joined Imani at Montrose Beach. But he’s no wingman.

The only known surviving chick of Chicago’s famous piping plover pair, Monty and Rose, has a new rival.

A second piping plover — unofficially known as Green Dot — has joined the city’s favorite avian bachelor, Imani, at the North Side’s Montrose Beach.

The newcomer, believed to be male, has been seen walking next to Imani, along a parallel path. And while that may look like wingman behavior to humans, among piping plovers, the message is different.

“That’s male territorial behavior,” said Tamima Itani...