check the tail of the bird, google image swallow bird

https://www.google.com/search?num=10&hl=en&site=imghp&tbm=isch&source=hp&biw=1150&bih=641&q=swallow+bird&oq=Swallow&gs_l=img.1.1.0l10.2055.2055.0.4358.1.1.0.0.0.0.86.86.1.1.0...0.0...1ac.2.hctF4bB7l3E