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Why Do Roosters Crow in the Morning?

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In this video:

Next to the bark of a dog or the gentle meowing of a cat, the crow of a rooster is one of the most recognisable animal noises on Earth; but why exactly do roosters feel the need to crow and is there any truth to the idea that they crow more (or only) in the morning?

Want the text version?: http://www.todayifoundout.com/index.php/2015/01/roosters-crow-really-morning-day/

Sources:

http://www.cell.com/current-biology/abstract/S0960-9822%2813%2900186-3
http://news.discovery.com/animals/roosters-are-pre-programmed-to-crow-130318.htm
http://www.straightdope.com/columns/read/1566/why-do-roosters-crow-early-in-the-morning
http://www.livescience.com/27972-roosters-know-time.html
http://news.nationalgeographic.com/news/2013/03/130318-rooster-crow-circadian-clock-science/
http://articles.latimes.com/2013/mar/18/science/la-sci-sn-rooster-crowing-circadian-rhythm-20130318
http://www.smithsonianmag.com/science-nature/how-do-roosters-know-when-to-crow-3501338/?no-ist

Видео Why Do Roosters Crow in the Morning? канала Today I Found Out
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25 ноября 2018 г. 22:00:02
00:05:31
Яндекс.Метрика