But their most important job is to whistle,shout,flap their arms and run about crazily to turn the attention of an unhappy, with sharp horns away from a fallen rider.

VOA: standard.2010.01.25

You can train it to flap its wings to escape a situation but it's very difficult to get it to flap its wings for food.

你可以训练鸽子,通过扇动翅膀来脱离某个情境,但却很难通过训练鸽子扇动翅膀来进食。

耶鲁公开课 - 心理学导论课程节选