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  2. 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]

  3. Oviparity - Wikipedia

    en.wikipedia.org/wiki/Oviparity

    Eggs of various animals (mainly birds) Oviparous animals are animals that reproduce by depositing fertilized zygotes outside the body (known as laying or spawning) in metabolically independent incubation organs known as eggs, which nurture the embryo into moving offsprings known as hatchlings with little or no embryonic development within the mother.

  4. Parental care in birds - Wikipedia

    en.wikipedia.org/wiki/Parental_care_in_birds

    Females never incubate offspring alone unless the male has been killed. Some examples of birds which practice sequential polyandry include spotted sandpipers and red-necked phalaropes. Temminck's stint, little stint, mountain plover, and sanderling share in common that the females lays a clutch of eggs and the male incubates them. Second ...

  5. Insect reproductive system - Wikipedia

    en.wikipedia.org/wiki/Insect_reproductive_system

    Male genitalia of Lepidoptera. The main component of the male reproductive system is the testicle, suspended in the body cavity by tracheae and the fat body.The more primitive apterygote insects have a single testis, and in some lepidopterans the two maturing testes are secondarily fused into one structure during the later stages of larval development, although the ducts leading from them ...

  6. Chick culling - Wikipedia

    en.wikipedia.org/wiki/Chick_culling

    Because male chickens do not lay eggs and only those in breeding programmes are required to fertilise eggs, they are considered redundant to the egg-laying industry and are usually killed shortly after being sexed, which occurs just days after they are conceived or after they hatch. [3]

  7. Broodiness - Wikipedia

    en.wikipedia.org/wiki/Broodiness

    Some cichlid fish lay their eggs in the open, on rocks, leaves, or logs. Male and female parents usually engage in differing brooding roles. Most commonly, the male patrols the pair's territory and repels intruders, while females fan water over the eggs, removing the infertile and leading the fry while foraging.

  8. Forget eggs, frogs give birth to live tadpoles

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

    "Fewer than a dozen of the 6455 species of frogs in the world are known to have internal fertilization, and of these, all but the new species either deposit fertilized eggs or give birth to froglets."

  9. Red-crowned parakeet - Wikipedia

    en.wikipedia.org/wiki/Red-crowned_parakeet

    Egg laying takes place from November to January, peaking in December. On average, clutches count 7 eggs, yet can range from 4 to 9. Eggs look oval and white with a slight gloss which fades during incubation. In red-crowned parakeets, only the female incubates. While in the nest, they are seen turning their eggs regularly.