Molt

Molt or moult is a process in animals that involves the shedding of old feathers, hair, skin, or shells, to make way for new growth. This process is common in many species of animals, including birds, reptiles, amphibians, and crustaceans.

Overview

Molting is a natural process that allows animals to replace old, worn out, or damaged body parts. This can include feathers in birds, fur in mammals, skin in reptiles, and exoskeletons in arthropods. The process of molting can vary greatly between different species, and can be influenced by factors such as age, sex, and environmental conditions.

Process

The process of molting involves the breakdown and reabsorption of the old tissue, followed by the growth of new tissue. In birds, for example, old feathers are pushed out by the growth of new ones. In reptiles, the old skin is shed in one piece, while in arthropods, the old exoskeleton is shed in a process called ecdysis.

In different animals

Birds

In birds, molting is a regular process that usually occurs annually. The timing and pattern of molt can vary between species, and can be influenced by factors such as age, sex, and environmental conditions. During molt, birds may change their behavior, often reducing their activity levels to conserve energy.

Reptiles

Reptiles such as snakes and lizards also undergo molting, which involves the shedding of the outer layer of skin. This process can occur several times a year, and is often associated with growth and development.

Arthropods

In arthropods, including insects and crustaceans, molting involves the shedding of the exoskeleton. This process, known as ecdysis, allows the animal to grow and develop. The new exoskeleton is initially soft, but hardens over time.

See also

• Feather
• Exoskeleton
• Ecdysis

References

Molt Resources
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