Justin Bieber seems to be extending his strange behavior in Boston, Massachusetts. The popular "Sorry" singer made his way back to the Boston Public Garden on Wednesday and was spotted scaling a large tree in the park.

According to People Magazine, the popstar was wearing a black hat, grey t-shirt and baggy denim shorts over high black socks, and sat on the tree with his legs flailing off the sides.

A guitarist was strumming to "Scarborough Fair" not too far away and Bieber seemed to be enjoying his time alone in the middle of the park. He was sighted listening to headphones and sitting on the tree with his arms in the air.

This comes after his dramatic day in Boston where he reacted strangely to fans. Bieber now refuses to take photos with fans and says he feels like a "zoo animal".

Later on that day, the musician was spotted walking around barefoot and feeding squirrels in the Boston Public Garden. He then lay on the grass and took a few selfies. Later, he went to play a few games of pool at Jillian's in the Fenway neighborhood, the venue confirmed on Wednesday.

People who attended his concert on Tuesday evening also said that the musicians behavior was rather strange that evening. One fan said, "He said he had a bad experience the last time he was in Boston, and this one's already off to a better start. He was literally in a glass case of emotion. He didn't even try. At one point he just stopped singing al together."

As per Perez Hilton, the 22 year-old "feels a lot of pressure on him from the world and all the attention really stresses him out." Perhaps this is the reason why the artist has been reconnecting with nature over the past few days.