According to University of Buenos Aires physicist Gabriel B. Mindlin, a significant proportion of bird species are songbirds, possessing specific brain regions dedicated to song learning. Through his research, Mindlin explores the connections between birds' dreams and song production, particularly in species like Zebra Finches and Great Kiskadees. His investigations reveal that while Zebra Finches exhibit fragmented and disjointed movements during sleep reminiscent of song rehearsing, the instinctive song-learning abilities of Great Kiskadees present a contrasting narrative.
Mindlin notes that a dozing finch seems to silently practice a few notes, producing muscle activity patterns similar to learning an instrument. The findings from this research indicate a dream-like state for Zebra Finches, allowing them to engage in a rehearsal process while asleep. Conversely, the nonlearning Great Kiskadees show minimal dream activity related to song rehearsing, suggesting that dream-related song practice may be less inherent in their biology.
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