Are Female Crowned Eagles Bigger Than Males?


Are Female Crowned Eagles Bigger Than Males?

Yes, female Crowned Eagles are indeed bigger than their male counterparts. This size difference is a common trait among birds of prey, where the female is often larger and stronger than the male.

The Size Difference Between Male and Female Crowned Eagles

According to a study on the Gender-related morphometric differences in mature and nestling Crowned Eagles in KwaZulu-Natal, South Africa, the female Crowned Eagles were found to be around 10-15% larger than the males in terms of weight.

Measurement Female Male
Weight 3.2-4.7 kg (7 lb 0.9 oz-10 lb 6 oz) 2.55-4.12 kg (5 lb 10 oz-9 lb 1 oz)
Wingspan 1.51-1.81 m (5.0-5.9 ft) 1.51-1.81 m (5.0-5.9 ft)

The size difference is also reflected in the wingspan of the Crowned Eagles. While the average wingspan is 1.51-1.81 m (5.0-5.9 ft), the female has a slightly larger wingspan than the male.

Evolutionary Adaptation for Hunting and Protecting Young

are female crowned eagles bigger than malesImage source: crowned eagle

The size difference between male and female Crowned Eagles is believed to be an evolutionary adaptation that allows them to better hunt and protect their young. The female, who is usually responsible for incubating the eggs and rearing the chicks, is larger and stronger, which allows her to better defend her nest against predators and competitors.

The male, on the other hand, is smaller and more agile, which allows him to better hunt for food and bring it back to the nest. This division of labor and specialization in hunting and nest defense is thought to be a key factor in the success of the Crowned Eagle as a species.

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Crowned Eagles: Africa’s Most Powerful and Ferocious Eagles

While on average smaller in all measurements but length than the Martial Eagle, the Crowned Eagle is often considered Africa’s most powerful and ferocious eagle in terms of the weight and nature of prey it can take down. This is due in part to the size and strength of the female Crowned Eagle, which allows her to tackle larger and more formidable prey.


In conclusion, female Crowned Eagles are indeed bigger than males, with a weight difference of around 10-15% and a slight difference in wingspan. This size difference is believed to be an evolutionary adaptation that allows the female to better hunt and protect her young, making the Crowned Eagle one of the most powerful and ferocious eagles in Africa.