If a person who knows that a bird does this warns you, take their word for it, some cockatoos can lie with their body language as adeptly as a faithless lover can lie with words.

• 人若明白鸟这样做是对他的一种警告的话，就当小心。一些葵花种属的鹦鹉能熟练地以肢体语言，像一个无信用的情人能以文字骗人一样，欺骗人。