At the sidewalk of Tamagawa-josui, which is a canal in Western Tokyo, there was staged a Streetview prank, very likely by the students of a nearby art school, Musashino Art University. These people are well-known to Internet users as Japanese Bird People or Japanese Pigeon People.
Edit: Looks like the same gang strikes again!
Name: Japanese Bird People
Lat, Long: 35.7040744,139.5577317
Location: Tokyo, Japan