En Caul Birth – A Rare and Fascinating Phenomenon An en caul birth occurs when the baby is delivered still completely enclosed inside an intact amniotic sac — a glistening, translucent “bubble.” It happens in fewer than 1 in 80,000 vaginal deliveries. Key Clinical Points - The amniotic membrane does not rupture during labour (true “caul” birth) - Most common in preterm births and caesarean sections (higher fluid volume, less pressure) - Historically considered a sign of good luck or special dest