This distance remains the greatest in the migration of any type of bird. With such capability the Nordmann's terns 'range of food isn't limited to the coastal areas where they rest. Except during breeding, the birds venture far from the nest. You may often see them go far out to sea to "make a living."
有了這樣的「本錢」，燕鷗覓食的「勢力範圍」就不限於棲息地周圍的海域；除了繁殖期不敢遠離巢穴，其餘的時間，經常可以看到它們到遠海去「討生活」。