Unlike other hatchlings that have an egg tooth to break their shell, ostriches have a protective layer that helps to shield the tip of their soft beak.
Erinevalt teiste linnuliikide poegadest, kellel on munahammas, millega munakoorde avaus lüüa, katab jaanalinnupoegade nokka kiht, mis kaitseb nende õrna nokatippu.