We had bought this curtain for our input, because the Schalben thought here would be good to build the nest. Curtain tuned ..... Swallows While sour but away. A positive side effect ---> fly away and it even looks really good. When the sun shines, it's a fantastic play of light because of the incorporated silver threads. The quality is also much better than I would have expected for the price. I would buy it again and it can therefore only recommend.