Megapode the surface of the mound, lying on their backs and scratching at the sand and vegetable matter. Similar to other superprecocial birds, they hatch fully feathered and active, already able to fly and live independently from their parents. In megapodes superprecociality apparently evolved secondarily from brooding and at least loose parental care as more typical in Galliformes, but their reproductive model has been compared to various extinct maniraptors, implying that supreprecociality was common if not ancestral in early birds. Eggs previously assigned to "Genyornis" have been reassigned to giant megapode species. Some dietary and chronological data previously assigned to dromornithids
Nicobar megapode Nicobar megapode The Nicobar megapode or Nicobar scrubfowl ("Megapodius nicobariensis") is a megapode found in some of the Nicobar Islands (India). Like other megapode relatives, it builds a large mound nest with soil and vegetation, with the eggs hatched by the heat produced by decomposition. Newly hatched chicks climb out of the loose soil of the mound and being fully feathered are capable of flight. The Nicobar Islands are on the edge of the distribution of megapodes, well separated from the nearest ranges of other megapode species. Being restricted to small islands and threatened by hunting, the species is vulnerable