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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 birds, 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 70 km/h (43.5 mph), [ 4 ] they are the fastest birds on land.
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 cassowary breeding season starts in May to June. Females lay three to eight large, bright green or pale green-blue eggs in each clutch into a heap of leaf litter prepared by the male. [26] The eggs measure about 9 by 14 cm (3.5 by 5.5 in) – only ostrich and emu eggs are larger.
It’s pretty rare to encounter an ostrich in the wild. Although large and confident, ostriches mostly steer clear of humans. An ostrich may wander through rural areas on occasion, but it is very ...
Eggs of: ostrich, emu, kiwi and chicken. Egg size tends to be proportional to the size of the adult bird, [citation needed] from the half gram egg of the bee hummingbird to the 1.5 kg egg of the ostrich. Kiwis have disproportionately large eggs, up to 20% of the female's body weight. [18]
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Masai ostriches are not the main prey items for key carnivores. [22] Only lions are the central predator of adults in most areas, but many species prey on ostrich eggs including jackals, hyaenas, lions, and other avian species. [4] [5] Egg predation poses the greatest threat to the reproductive success of wild ostrich populations. Documented ...