The eggshells of this species are exceptionally thick and tough to split. Chicks hatch by “breaking out” as opposed to chipping absent at the shell. Worming your breeders at the time then abide by up 10 times later will insure the birds are healthful and match for the breeding time. https://globalcrystalpoultry.com/product/vulturine-guinea-fowl-chicks-for-sale/