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Description. Although daily egg production starts to tail off after one year old, it may continue until 5–7 years old. Older hens gradually produce fewer eggs, and the eggs are usually larger. [ 1] Since the average lifespan of a pet layer hen is 8–15 years, [ 2] henopause has received attention as a potential problem for backyard or urban ...
Cannibalism in poultry. Cannibalism in poultry is the act of one individual of a poultry species consuming all or part of another individual of the same species as food. It commonly occurs in flocks of domestic hens reared for egg production, although it can also occur in domestic turkeys, pheasants and other poultry species. [1]
Chickens are common and widespread domestic animals, with a total population of 26.5 billion as of 2023, and an annual production of more than 50 billion birds. A hen bred for laying can produce over 300 eggs per year. There are numerous cultural references to chickens in folklore, religion, and literature.
Hens crave privacy and darkness when laying eggs, so plan for at least one nesting box for every four or five hens. A box that measures 14"W-by-14"H x 12"D will give even a big gal plenty of room.
Feather pecking. Feather pecking amongst laying hens. In the lower right of the picture, the white hen has lost her tail feathers and the brown hen has been feather pecked on the thigh and wing. Feather pecking is a behavioural problem that occurs most frequently amongst domestic hens reared for egg production, [1][2] although it does occur in ...
Prolactin injection in hens provokes egg laying to stop within a few days, vitellum reabsorption, ovary regression (hens only have a left ovary [14]) and finally broodiness. [15] [16] However, attempts to stop broodiness by the administration of several hormones have failed because this state, once evoked, requires time to revert.
Chicken hypnotism. A chicken can be hypnotized, or put into a trance, with its head down near the ground, by drawing a line along the ground with a stick or a finger, starting at the beak and extending straight outward in front of the chicken. If the chicken is hypnotized in this manner, it will continue to stare at the line and remain immobile ...
Chicken eyeglasses, also known as chicken specs, chicken goggles, generically as pick guards, and under other names, [2] were small eyeglasses made for chickens intended to prevent feather pecking and cannibalism. They differ from blinders in that they allow the bird to see forward, whereas blinders do not. One variety used rose-colored lenses ...