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Snakes may lay eggs in communal burrows, where a large number of adults combine to keep the eggs warm. Some species coil their torsos around the eggs to provide heat for incubation. Alligators and crocodiles either lay their eggs in mounds of decomposing vegetation or lay them in holes they dig in the ground.
An incubator is a device simulating avian incubation by keeping eggs warm at a particular temperature range and in the correct humidity with a turning mechanism to hatch them. The common names of the incubator in other terms include breeding / hatching machines or hatchers , setters , and egg breeding / equipment .
An Egyptian egg oven or Egyptian mamal is an oven for hatching eggs by incubation using artificial heat. [1] Manmade hatching ovens in Egypt date back to the 4th century BC. [2] Although using old processing methods, they were considered effective at hatching chickens, especially in comparison to other techniques of the time. [3]
A duck egg might have a higher value of nutrition than a chicken egg but overall, both chicken and duck balut have approximately the same nutritional value. [15] In folk medicine, according to popular Vietnamese belief, these eggs are a nutritious and restorative food for pregnant or delivering women. [16]
The female will lay a clutch of 7–15 eggs but only begins incubation when the last egg has been laid, thereby permitting synchronous hatching. All hatchlings are consequently of the same size, which facilitates efficient parental care. During incubation, the female may lose anywhere from 8% to 16% of her body weight.
The first infant incubator, used at a women's hospital in Paris, was heated by kerosene lamps. Fifty years later, Julius H. Hess , an American physician often considered to be the father of neonatology, designed an electric infant incubator that closely resembles the infant incubators in use today.
Gull eggs were sometimes used to supplement domestic chicken flocks (Gallus gallus domesticus): when broody hens were determined to incubate and hatch their own eggs—which would eventually allow for the perpetuation of the flock if a cock had recently been present—householders could instead collect wild gulls' eggs. [10]
The common goldeneye or simply goldeneye (Bucephala clangula) is a medium-sized sea duck of the genus Bucephala, the goldeneyes. Its closest relative is the similar Barrow's goldeneye . [ 2 ] The genus name is derived from the Ancient Greek boukephalos ("bullheaded", from bous , "bull " and kephale , "head"), a reference to the bulbous head ...