Pigeons are often seen as dirty birds and an urban nuisance, but they are just the latest in a long line of animals that have been found to have abilities to help humans.

人们常把鸽子视为肮脏的鸟类或是城市的公害，但他们只是众多有能力帮助人类的动物中的最新一员。

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But he started — the pigeons started to think, effectively, what was it I did just before that last piece of corn came?

那些鸽子会想，上一粒谷粒掉过来之前我做了什么？

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The answer is yes, but there is one catch.The catch is that no matter how the pigeons are placed, one of the pigeonholes must contain more than one pigeon.

回答是肯定的，但存在一个定式，即无论鸽子是怎样装入的，必然有一个鸽子洞要装入2个以上的鸽子。

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But he started--the pigeons started to think, effectively, what was it I did just before that last piece of corn came?

那些鸽子会想,上一粒谷粒掉过来之前我做了什么

耶鲁公开课 - 金融市场课程节选

But anyway, he did a famous experiment with pigeons which, in the 1940s -1948 -in which he induced strange behavior patterns in pigeons by the following simple experiment.

他做过一个著名的鸽子实验,在19世纪40年代,是1948年,他用一个简单的实验,诱发了鸽子的强烈行为

耶鲁公开课 - 金融市场课程节选

If Skinner kept the focus on rats and pigeons and dogs, he would not have the impact that he did but he argued that you could extend all of these notions to humans and to human behavior.

如果斯金纳只是研究老鼠鸽子或是狗，他就不会拥有如此巨大的有影响力了,但他宣称，这些概念是可以应用到,人类以及人类行为中去的。

耶鲁公开课 - 心理学导论课程节选

But a group of pigeons in Kentucky has now exploded the myth that humans alone have such a work ethic.

ECONOMIST: Puritanical pigeons

The Chinese also raise pigeons as pets, but those tend to be a different type.

NPR: China Kills Market Birds As Flu Found In Pigeons

Nonsense, say the pigeon-owners, who point out that a hawk or falcon attacking a flock of 50 pigeons may get only one of them, but that the rest will be so frightened that they lose their bearings.

ECONOMIST: Feathered enemies