Loon pairs are generally monogamous and highly territorial, emitting their haunting yodels during the breeding season to ward off intruders and violently attacking any that come too close.

• 潜鸟一对通常是一夫一妻制和非常领土的，发出不易忘怀的歌声当养育季节会保卫防止入侵者和猛烈的攻击任何来犯的敌人。