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Pigeon's pie

点击量:   时间:2019-03-06 05:08:07

By Alison Motluk WE AREN’T the only ones with a “work ethic”. Pigeons value hard-won rewards more than freebies, say researchers in Kentucky. This indicates that appreciating the fruits of our labour isn’t a particularly human virtue, they say. Thomas Zentall and Tricia Clement of the University of Kentucky in Lexington trained pigeons to tap a button to get food. Sometimes they had to tap once, after which the button turned red and a food reward was produced. On other occasions,