Why Don't Egg Farms Want Male Chicks?

Why are billions of male chicks killed in egg hatcheries while other male chickens are raised for meat? The answer reveals one of the most surprising consequences of modern poultry farming, selective breeding, and industrial food production. Every year, billions of male chicks are estimated to be culled worldwide because they cannot lay eggs and are less efficient at producing meat than commercial broiler chickens. But how did the same species develop two completely different industrial destinies? This documentary explores the fascinating science and hidden history behind male chick culling, from Cecile Steele's unexpected delivery of 500 chicks in Delaware in 1923 to the groundbreaking 1948 Chicken of Tomorrow competition that helped transform America's poultry industry. Discover how genetic selection created fast-growing broiler chickens and highly productive egg-laying hens, why male layer chicks grow differently, and how chicken biology—including ZZ and ZW chromosomes, reproductive development, and muscle growth—explains this remarkable divide. We'll also uncover the 1925 Japanese breakthrough in chick sexing, the ancient practice of caponization, and the economic forces that shaped industrial hatcheries. Finally, explore how modern in-ovo sexing technology can identify a chick's sex before hatching, offering a potential alternative to traditional male chick culling. Behind the chicken and eggs we eat every day lies an extraordinary story of biology, history, scientific innovation, and the hidden tradeoffs of modern agriculture.