Is it a bird...? No, it's a window cleaner (spiderman).

A five-star hotel in China dressed its window cleaners as Spiderman in an effort to avoid disturbing guests. Shanghai Sheraton Hotel says they wanted to minimize the affect of the week-long cleaning. "Nobody wants to see a person suddenly appear outside their window, so we thought of dressing them as movie characters, which should be fun and harmless," said a hotel spokesman.
The hotel says they were not expecting the Spiderman cleaners to attract so much attention. Many guests have even asked to have their photos taken with them.