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The outbreak has killed over 57.8 million birds across the country since early 2022, the U.S. Centers for Disease Control and Prevention estimates, and most of them are egg-laying hens. Bird flu ...
The large size of elephant bird eggs means that they would have required substantial amounts of calcium, which is usually taken from a reservoir in the medullary bone in the femurs of female birds. Possible remnants of this tissue have been described from the femurs of A. maximus. [13] Aepyornis eggs, Muséum national d'Histoire naturelle, Paris
The extinction of the elephant bird is attributed to human activity. The birds were once widespread, but deforestation and the hunting of the bird's eggs led to the species' decline. [3] Attenborough compares the factors that led to the extinction of the elephant bird with the threats facing critically endangered species in the present. [3]
The tops of elephant bird skulls display punctuated marks, which may have been attachment sites for fleshy structures or head feathers. [18] Mullerornis is the smallest of the elephant birds, with a body mass of around 80 kilograms (180 lb), [16] with its skeleton much less robustly built than Aepyornis. [19]
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]
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Bird eggs are laid by the females and range in quantity from one (as in condors) to up to seventeen (the grey partridge). Clutch size may vary latitudinally within a ...
The second elephant calf in two weeks has been born at a California zoo. African elephant Amahle gave birth early Monday morning, according to the Fresno Chaffee Zoo. The new additions are the ...