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  2. Egg incubation - Wikipedia

    en.wikipedia.org/wiki/Egg_incubation

    The only living mammals that lay eggs are echidnas and platypuses. In the latter, the eggs develop in utero for about 28 days, with only about 10 days of external incubation (in contrast to a chicken egg, which spends about one day in tract and 21 days externally). [11] After laying her eggs, the female curls around them.

  3. Budgerigar - Wikipedia

    en.wikipedia.org/wiki/Budgerigar

    The eggs are typically one to two centimetres long and are pearl white without any colouration if fertile. Female budgerigars can lay eggs without a male partner, but these unfertilised eggs will not hatch. Females normally have a whitish tan cere; however, when the female is laying eggs, her cere turns a crusty brown colour.

  4. Long-tailed parakeet - Wikipedia

    en.wikipedia.org/wiki/Long-tailed_Parakeet

    The long-tailed parakeet is able to live ... Females tend to lay a clutch of 2 to 4 eggs approximately 30.5 x 24.5mm. It usually takes about 23 to 24 days for the ...

  5. Forget eggs, frogs give birth to live tadpoles

    www.aol.com/news/2015-01-02-forget-eggs-frogs...

    These are frog eggs. This is how we're used to frogs having babies. They lay eggs, those eggs hatch into tadpoles ... and you learned the rest in science class. However, a newly discovered species ...

  6. Chronic egg laying - Wikipedia

    en.wikipedia.org/wiki/Chronic_egg_laying

    While a single specific cause is unknown, chronic egg laying is believed to be triggered by hormonal imbalances influenced by a series of external factors. [1] As in the domestic chicken, female parrots are capable of producing eggs without the involvement of a male – it is a biological process that may be triggered by environmental cues such as day length (days becoming longer, indicating ...

  7. Birds are laying eggs earlier as climate change shifts springs

    www.aol.com/news/birds-laying-eggs-earlier...

    With climate change spurring earlier springs across much of North America, many birds are laying their eggs earlier in the year, according to a new study – adding to mounting evidence that ...

  8. Parakeet - Wikipedia

    en.wikipedia.org/wiki/Parakeet

    The presence of other parakeets encourages a pair to breed, which is why breeding in a group is better. Despite this, many breeders choose to breed in pairs to both avoid conflicts and know offspring's parentage with certainty. Budgerigars lay an average of 4-6 eggs, while other parakeet species may lay an average of 4-6 eggs. [citation needed]

  9. Echo parakeet - Wikipedia

    en.wikipedia.org/wiki/Echo_parakeet

    Eggs are laid between August and October, mostly in late September and early October, and late clutches may be due to repeated laying. Clutch size has been reported as normally two to four. The eggs are typical of parrots, rounded and white, measuring around 32.2 by 26.8 mm (1.27 by 1.06 in), and weighing about 11.4 g (0.40 oz).