![]() ![]() One exception is cuckoos’ eggs, which are never hatched by the mother cuckoo, as they are stealthily laid in other brooding birds’ nests.Īnother highly unusual anomaly in the bird world is the maleo, an extremely rare shorebird native to Sulawesi, Indonesia. However these species are relatively rare and comprise around only 5 percent of all bird species.īirds’ eggs do need to be incubated with an external heat source to hatch, and in the wild, this is by either parent bird. For such birds, incubation and raising of young is undertaken by the male alone. Jacanas, dotterels, and phalaropes are polyandrous species, meaning that the females mate with more than one male. In some bird species, the eggs are incubated solely by the father, including emus, cassowaries and emperor penguins. ![]() Incubation is undertaken by the mother alone, by both parents in rotation, or in rarer cases, by just the male.Īrtificial incubation is also used in commercial settings, with thermostat-controlled incubators maintaining the required temperature for eggs of chickens, ducks, quails and pheasants to hatch successfully. The ‘egg cycle’ of all birds is loosely similar regardless of the size of the egg: a clutch of eggs is laid, incubation follows, and, after a specific period of time (which varies according to species), young hatchlings emerge from the eggs to begin life in the outside world.īut what factors affect how long an egg needs to be incubated? And do eggs survive if they are not incubated? If you’d like to know more about the fascinating hatching process, then please read on.Īfter a period of incubation – anything from 9 days for a white-eye to 80 days for a royal albatross – newborn chicks emerge from eggs, pecking their way out from inside the shell. What temperature is needed for eggs to be incubated successfully? ![]()
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