Hello, i am currently in Geneva, and i have seen a mysterious yellow bird in my lilac bushes. It darted away the moment i saw this. I believe its is here year round, because i saw it six months ago, and the same thing happened. It was around 15 cm long, although this is not very accurate as i saw it from a second floor window. I have had a bit of a problem identifying it, so could anyone please help me? Thank you!