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Ostrich eggs are the largest of all eggs, [4] though they are actually the smallest eggs relative to the size of the adult bird — on average they are 15 cm (5.9 in) long, 13 cm (5.1 in) wide, and weigh 1.4 kilograms (3.1 lb), over 20 times the weight of a chicken's egg and only 1 to 4% the size of the female. [5]
They are the heaviest and largest living Avian Dinosaur, with adult common ostriches weighing anywhere between 63.5 and 145 kilograms and laying the largest eggs of any living land animal. [3] With the ability to run at 97 km/h (60 mph ), they are the fastest bipedal animals on land second only to the cheetah.
Ostrich eggs are the largest of all eggs, [68] though they are actually the smallest eggs relative to the size of the adult bird – on average they are 15 cm (5.9 in) long, 13 cm (5.1 in) wide, and weigh 1.4 kg (3.1 lb), over 20 times the weight of a chicken's egg and only 1 to 4% the size of the female. [69]
The eggs measure about 9 by 14 cm (3.5 by 5.5 in) – only ostrich and emu eggs are larger. The male incubates those eggs for 50–52 days, removing or adding litter to regulate the temperature, then protects the chicks, which stay in the nest for about 9 months. He defends them fiercely against all potential predators, including humans.
Ostrich eggs are vulnerable to many predators ranging from mongooses and Egyptian vultures, to hyenas. [20] Snakes of the genera Dasypeltis and Elachistodon specialize in eating eggs. Humans have a long history of eating eggs , both wild bird eggs and farm-raised bird eggs.
Female cassowaries lay eggs and then leave the nest, so males incubate the eggs and then raise the young chicks. ... Like their cousins the emus and ostriches, cassowaries are bipeds who can run ...
The male and female alternate to sit on the eggs with the female doing duty in the day and the male in the night. Some birds can lay up to 100 eggs during the breeding season with an egg being laid every one or two days. During this period the male ostriches become very aggressive protecting both the female and the eggs. [citation needed]
According to a 2020 cohort study of more than 3,600 people age 49 and older, moderate egg consumption, defined as two to four eggs weekly, significantly reduced a person's risk of developing late ...