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On average, captive animals (especially mammals) live longer than wild animals. This may be due to the fact that with proper treatment, captivity can provide refuge against diseases, competition with others of the same species and predators. Most notably, animals with shorter lifespans and faster growth rates benefit more from zoos than animals ...
The behavior spreads among the birds by imitation. [11] In captivity some will spontaneously dance to music with a variety of unique moves. [12] These birds are very long-lived, and can live upwards of 70 years in captivity, [13] [14] although they only live to about 20–40 years in the wild.
Grey parrots may live for 40–60 years in captivity, although their mean lifespan in the wild appears to be shorter — approximately 23 years. They start breeding at an age of 3–5 years and lay 3–5 eggs per brood.
More than 200 others live in captivity. The largest land bird in North America with a wing-span of 9.5 feet (2.9 meters), condors have been protected in the U.S. as an endangered species since 1967. Many conservationists consider it a miracle any still exist at all.
The current population of wild kagus is about 250–1000 birds, and the species is the focus of a decades-long conservation effort. The kagu's initial decline was caused by subsistence hunting. The bird was trapped extensively for the European pet trade [5] and for museums and zoos until it was afforded protection. [14]
The cockatiel's average life span is 12 to 15 years, [20] though in captivity and under appropriate living conditions, a cockatiel could be expected to live from 16 to 25 years. [21] The oldest living and confirmed specimen of cockatiel was reportedly 36 years old.
In captivity, budgerigars live an average of five to eight years, but life spans of 15–20 years have been reported. [44] The life span depends on breed, lineage, and health, being highly influenced by exercise and diet. Budgerigars have been known to cause "bird fancier's lung" in sensitive people, a type of hypersensitivity pneumonitis. [45]
As of 2021, about 50 million parrots (half of all parrots) live in captivity, with the vast majority of these living as pets in people's homes. [6] Measures taken to conserve the habitats of some high-profile charismatic species have also protected many of the less charismatic species living in the same ecosystems.