The megapodes, also known as incubator birds or mound-builders, are stocky, medium-large chicken-like birds with small heads and large feet in the family Megapodiidae. They are terrestrial browsers. All but the Malleefowl occupy jungle habitats, and most are brown or black coloured. Megapodes are called superprecocial, which means that they hatch from their eggs in the most mature condition of any birds. They hatch with open eyes, with bodily coordination and strength, with full wing feathers and downy body feathers, able to run, pursue prey, and, in some species, able fly on the same day they hatch.

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Lava Gull, Larus fuliginosus specie is a large gull, related to the Laughing Gull. One of the rare gulls in the world, the entire population lives on the Galapagos Islands and is estimated at 400 couples. Gulls lava are solitary nest, throwing two of olive color and well camouflaged eggs, which take 30 days to incubate. Young birds to 60 days [...]

Female crocs lay their eggs in clutches of 20 to 60 eggs. After the eggs have incubated for about three months, the mother opens the nest and helps her young out of their shells.

The eggs are fertilized during the transfer from the female to the male. The males incubate the eggs and carry them to term, releasing miniature sea dragons into the water after about four to six weeks.

In Australia, a team of scientists led by Canberra University's Alex Quinn recently discovered that high temperatures could effectively "switch" the sex of central bearded dragons. Incubating the lizards' eggs at temperatures between 34°C and 37°C caused a majority of male embryos to hatch as females — an effect that has scientists worried about th