Why do the mummy emus don't look after the eggs?

Mummy emus, or female emus, do not incubate the eggs themselves because the males take on this responsibility. After laying a clutch of eggs, the female leaves the male to incubate and protect the eggs, which can take around 50 to 60 days. This role reversal allows the female to conserve energy and prepare for the next breeding season, while the male focuses on ensuring the eggs hatch successfully.