A great kiskadee, a songbird that seems to dream about singing Gerald DeBoer/Getty Images
We can now listen to songs that a small Argentinian bird thought of in its sleep. Listening to such songs across more species of birds could inform the debate on how birds dream.
Physicist at the University of Buenos Aires in Argentina got interested in the mechanics of birdsong in the early 2000s, but expected it to be just a 鈥渇un detour鈥. Instead, it led him down the path of trying to hear what happens in birds鈥 minds. He and his colleagues have…



