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  2. Egg incubation - Wikipedia

    en.wikipedia.org/wiki/Egg_incubation

    A female mallard duck incubates her eggs. Egg incubation is the process by which an egg, of oviparous (egg-laying) animals, develops an embryo within the egg, after the egg's formation and ovipositional release. Egg incubation is done under favorable environmental conditions, possibly by brooding and hatching the egg.

  3. Gadwall - Wikipedia

    en.wikipedia.org/wiki/Gadwall

    During nesting season, the female lays a clutch of 7–12 eggs with each of them measuring 4.9–6 cm (1.9–2.4 in) in length and 3.4–4.4 cm (1.3–1.7 in) in width. Incubation lasts for 24–27 days and the nestlings leave after around 1–2 days. A gadwall can only raise one brood a season [2]

  4. Balut (food) - Wikipedia

    en.wikipedia.org/wiki/Balut_(food)

    A balut is a fertilized bird egg (usually a duck) which is incubated for a period of 14 to 21 days, depending on the local culture, and then steamed. The contents are eaten directly from the shell. Balut that is incubated for longer periods have a well-developed embryo and the features of the duckling are recognizable.

  5. Man Found An Abandoned Egg And Decided To Take It Home ... - AOL

    www.aol.com/entertainment/man-saved-lost-duck...

    He brought the egg home, placed it in an incubator, and eagerly waited for it to hatch Image credits: riyadhk When the egg eventually hatched, a tiny duckling, soon named Spike, came into the world

  6. Temperature-dependent sex determination - Wikipedia

    en.wikipedia.org/wiki/Temperature-dependent_sex...

    Some reptiles use incubation temperatures to determine sex. In some species, this follows the pattern that eggs in extremely high or low temperatures become female and eggs in medium temperatures become male. [14] Within the mechanism, two distinct patterns have been discovered and named Pattern I and Pattern II.

  7. Precociality and altriciality - Wikipedia

    en.wikipedia.org/wiki/Precociality_and_altriciality

    Precocial birds can provide protein-rich eggs and thus their young hatch in the fledgling stage – able to protect themselves from predators and the females have less post-natal involvement. Altricial birds are less able to contribute nutrients in the pre-natal stage; their eggs are smaller and their young are still in need of much attention ...

  8. A same-sex flamingo pair are raising a newborn chick ... - AOL

    www.aol.com/same-sex-flamingo-pair-successfully...

    Urge to nest. A number of other zoos have observed same-sex pairings among certain bird species. There are even several egg-hatching success stories, such as in 2007 when the Wildfowl & Wetlands ...

  9. World's oldest known wild bird lays egg at 74

    www.aol.com/worlds-oldest-known-wild-bird...

    Albatross parents share incubation duties and, once the chick hatches, feeding duties. Wisdom was first identified and tagged in 1956 after laying an egg. Laysan albatrosses are not known to breed ...

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