Birds traveling to the evening roosts do so at slightly different times, timing their arrival at 30–60 second intervals, presumably so as not to attract the attention of potential predators.
As aves que viaxan aos pousadeiros do serán fano en momentos lixeiramente diferentes, en intervalos de chegada de 30 a 60 segundos, presumiblemente para non atraeren a atención de potenciais predadores.