Hatchling

In oviparous biology, a hatchling is a newly hatched fish, amphibian, reptile, or bird.

[2] As well, hatchlings raised in water with high levels of carbon dioxide demonstrate unusual behaviour, such as being attracted to the scent of predators.

[3] The behavior of an amphibian hatchling, commonly referred to as a tadpole, is controlled by a few thousand neurons.

[14] They also head towards the brightest part of the horizon in order to reach the water: however, human activity has created sources of light which mislead the turtle hatchlings, causing them to not travel directly to the water, making them vulnerable to dehydration and predation.

Altricial means that the young hatch naked and with their eyes closed, and rely totally on their parents for feeding and warmth.

[23] It has also been shown that auditory development in hatchlings is disrupted by environments high in visual and social stimulation.

[24] Many hatchlings are born with some forms of innate behaviours which allow them to improve their ability to survive: for example, hatchling gulls instinctively peck at long objects with marked colour contrast, which leads them to peck at their parents' bills, eliciting a feeding response.

[25] Endocrine disruption of hatchling birds increases the rate of deformities and lowers the chances of survival.