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The peafowl might also nest on crevices in the buildings, and disused nests of vultures. [15] [45] The female lays a clutch of three to eight oval shaped eggs. The eggs measure about 2.45–3 in (6.2–7.6 cm) in length and 1.42–2.2 in (3.6–5.6 cm) in width. They appear polished and have thick shells with pits and pores.
A peacock served in full plumage (detail of the Allegory of Taste, Hearing and Touch by Jan Brueghel the Elder, 1618) In ancient Rome, peafowl were served as a delicacy. [64] The dish was introduced there in approximately 35 B.C. The poet Horace ridiculed the eating of peafowl, saying they tasted like chicken. Peafowl eggs were also valued.
1781 painting by Maruyama Okyo Adult female head and upper neck Male profile. The green peafowl is a large bird in terms of overall size. The male is 1.8–3 m (5 ft 11 in – 9 ft 10 in) in total length, including its train, which measures 1.4–1.6 m (4 ft 7 in – 5 ft 3 in); the adult female is around half the total length of the breeding male at 1–1.1 m (3 ft 3 in – 3 ft 7 in) in length.
The traditional modes of reproduction include oviparity, taken to be the ancestral condition, traditionally where either unfertilised oocytes or fertilised eggs are spawned, and viviparity traditionally including any mechanism where young are born live, or where the development of the young is supported by either parent in or on any part of their body.
Others will stop laying based on the apparent size of the clutch. According to whether they respond to addition, removal, or both addition and removal of eggs, birds are classified as determinate layers (number of eggs laid is predetermined and do not respond to change) or as indeterminate layers.
If the eggs happen to hatch, the parents will immediately start feeding them fish and keeping them warm. If the eggs don't hatch, the parents will slowly start leaving the eggs a little bit at a time.
According to Dr. Nathan Sundgren, associate medical director of the neonatal intensive care unit (NICU) who treated the babies, the sisters are now all between 6.5 to 7 pounds, and "doing great."
Monotremes, only five species of which exist, all from Australia and New Guinea, are mammals that lay eggs. They have one opening for excretion and reproduction called the cloaca. They hold the eggs internally for several weeks, providing nutrients, and then lay them and cover them like birds.