Friday, 23 February 2018
Birds ‘dream sing’ by moving their vocal muscles in their sleep

Added: 12.02.2018 11:18 | 30 views | 0 comments

Zebra finches sing during the day, and at night while they sleep their vocal organs act out the motions of singing, a bit like a sleepwalking person

More in www.newscientist.com »

Tags: Sleep, Walking



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