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The female lays 5-6 small white eggs over a period of 9–16 days. The female usually initiates incubation after the first egg is laid, leading to asynchronous hatching which begins 18–22 days after the start of incubation. Depending on the clutch size, hatching concludes 2–14 days after the first egg hatches. Fledging occurs 29–35 days ...
Even in other birds, ambient temperatures can lead to variation in incubation period. [7] Normally the egg is incubated outside the body. However, in one recorded case, the egg incubation occurred entirely within a chicken. The chick hatched inside and emerged from its mother without the shell, leading to internal wounds that killed the mother ...
The incubation period is about 30 days and fledging occurs about six weeks after hatch. [ 10 ] [ 13 ] Both the male and female orange-fronted parakeet excavate a cavity in the termite mound using their beaks (the male doing the majority of the early digging) over the course of about a week.
Incubation takes around 20–25 days and is done by the female alone. The father brings food to the mother while she incubates the eggs and feeds the chicks during their first few weeks of life, afterwards, feeding duties are undertaken by both parents. The fledging period begins when the chicks are 4–5 weeks of age. [18] [19] [14]
The female remains in the nest for almost all of the incubation period and is fed both by the male and during short breaks. Incubation varies from 17 to 35 days, with larger species having longer incubation periods. The newly born young are altricial, either lacking feathers or with sparse white down. The young spend three weeks to four months ...
The Alexandrine parakeet (Psittacula eupatria), also known as the Alexandrine parrot, ... (1.1 to 1.3 in). The average incubation period is 24 days. The chicks fledge ...
This is a collection of lists of mammal gestation period estimated by experts in their fields. The mammals included are only viviparous (marsupials and placentals) as some mammals, which are monotremes (including platypuses and echidnas) lay their eggs. A marsupial has a short gestation period, typically shorter than placental.
The plain parakeet's breeding season is believed to be from September to December but possibly begins earlier and ends later. It nests in cavities in trees. In captivity the clutch size is four eggs, the incubation period about 26 days, and fledging at seven weeks after hatch. [8