Scientists tell us that the family dog shuffling its legs while asleep on the floor really is dreaming. And when a bird silently nods off on its perch, it may also dream as its singing muscles twitch A substantial proportion of bird species are songbirds with specific brain regions dedicated to learning songs connections between birds’ dreams and song production—particularly in Zebra Finches, which often learn new sounds and songs, and in Great Kiskadees, which possess a limited, instinctive song-learning capacity. sleeping birds making movements that resembled lip-syncing Listening in on a sleeping songbird to better understand its waking behavior—and to look for a possible link to dreams—is a lot like “cracking a code in a detective novel birds’ song-learning brain regions, says the new results agree with his own observations of sleeping birds’ neurons. But he advises caution in describing this sleep activity as “dreaming.” Future work should more closely examine the sleep states the birds experience during this process, he says—including rapid eye movement (REM) sleep, a sleep stage that is closely associated with dreaming in other animals. sleeping tune comprised quick, identical note syllables that sounded startlingly loud and aggressive—“more like a nightmare than a dream,” Amador says. Slumbering kiskadees frequently combined these movements with a threatening flash of head feathers, which often occurs during their territorial disputes while they are awake.
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Tuesday, December 3, 2024