Oviparous animalsPosted on May 18, 2018 - Last modified: September 8, 2018
Oviparous animals are all those animals that are born from eggs, such as birds, the vast majority of reptiles, except for several species of lizards, amphibians and two mammals (Echidna and platypus).
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Characteristics of oviparous animals
Oviparous animals are those animals that lay and hatch from eggs, fertilization can be both inside the body, as with chickens or outside the body, such as eels, the development of the offspring always occurs outside the body of the mother, except ovoviviparous animals.
Thanks to this form of reproduction, the survival of the species is greatly improved, since the shell of the egg protects from external agents.
How oviparous animals care for their eggs
Each type of oviparous animals treats their eggs very differently and does not take care of them in the same way.
Some species of birds lay their eggs in nests previously created by themselves for this purpose. Other birds lay their eggs among rocks, usually scavengers and shore-dwelling birds. Other birds lay their eggs on the ground, such as chickens and pheasants.
Once the eggs are laid, the birds hatch their eggs for a couple of weeks until they hatch and feed them until they are able to learn to fly.
Fish and amphibians
Fish and amphibians lay their eggs in water, in many types of habitats, such as reefs, between rocks or by burying them. Once the eggs are deposited, their parents leave, leaving the young to their own devices until they can hatch.
The turtles create large holes in the sand on the beaches, lay their eggs there and bury them, then go back into the water. The hatchlings, when the egg hatches and hatches on their own, they dig up and instinctively head towards the sea.