Birds Sing to Prepare Babies for Heat | Science News

Science News Today | 2 Min News | The Daily News Now! · Aug 4, 2026 · 1m

Scientists uncovered a jaw-dropping twist: zebra finches sing special “heat calls” to unborn chicks, triggering genetic changes in the brain that prep them for scorching temperatures. These prenatal serenades dial down genes that constrict blood vessels, helping chicks cool down after hatching. The effect lasts a lifetime—adults raised to this sound prefer hotter nests and breed more successfully. It’s not just birds; other species like yellow-legged gulls also use sound to shape offspring behavior. Next time you hear a bird chirp, remember—it might be a survival strategy in action. Listen in…