Local attraction

This morning, my friend sent me a picture of a guy hanging around on a 'skyscraper' in the city of Rotterdam. After a couple minutes of googling (bless this technology), I found out that this giant human nest is made by Benjamin Verdonck. He has done this installation (the Great Swallow) before in Brussel but he is going to be hanging around his gigantic nest until the 22nd of May. I was told that this is part of his protest so people would stop chopping off trees and let birds come back to city, however I am not 100% sure.