The Golda hens when they were chicks. (Ori Peretz) In a dramatic breakthrough with the potential to halt the destruction of some seven billion unwanted male chicks globally each year, Israeli scientists have produced a gaggle of hens all called Golda that are the first in the world to Does Any Mammal Lay Eggs? that only produce females, the developers said Tuesday. The technology has been in development for seven years, with embryology expert Dr. Yuval Cinnamon heading a team at the Israeli Agricultural Research Organization — Volcani Center, in partnership with Poultry by Huminn.