The phrase "Why do birds suddenly appear?" is famously known as a lyric from the song "(They Long to Be) Close to You," originally performed by The Carpenters. In the song, this line poetically expresses the feeling that birds seem to show up whenever a particular loved one is near, symbolizing the attraction and closeness felt toward that person. It is not a literal question about bird behavior but rather a romantic metaphor.
If the question is about the natural behavior of birds appearing suddenly in real life, that would depend on environmental factors like food availability, disturbance, or social behavior, but the phrase itself is primarily recognized as a poetic expression from the song.
