Life expectancy of birds depends on many factors: whether they contain in bondage or live on freedom how fast they have a metabolism, etc. The maximum life expectancy - at a signature stamp, an eagle and a swan. The shortest life expectancy, most likely, the least birdies - a komarolovka and a humming-bird have.
Scientists-ornithologists noticed long ago that the more a bird, the longer she lives. To the contrary, the size of a bird is less, the quicker she has a metabolism, the smaller term is its life expectancy. Usually even the least bird lives in the nature not less than one and a half-two years. Therefore to speak about birds who live only one year, incorrectly. Such cases in the nature are extremely rare, unnatural and are not connected with any certain bird species.
One more factor which affects life expectancy - features of contents. Usually birds which are supported in cages live much longer than the relatives living on freedom. As a rule, it is connected with the fact that at liberty birds are threatened by a set of dangers, diseases, hunger, weather cataclysms, etc. In bondage there is no all this therefore live in "hothouse" conditions of a bird much longer.
If to proceed from two regularities described above, it is possible to assume that the least birds living on freedom have the smallest life expectancy. Treat such birds caliber and a komarolovka.
Long-livers in the world of birds
Signature stamp turkey, an eagle, a swan-shipun - long-livers in the world of birds. The signature stamp, for example, can live up to 110 years and more. And a swan - up to 70 years. The maximum life expectancy of an ordinary pigeon makes 35 years, a sparrow - 23 years, canaries - 24 years. Humming-birds and a blue komarolovka treat birds who live less than ten years. The humming-bird lives up to eight years, and a komarolovka - up to four years at most. Of course, in nature this term will be able strongly to be reduced - to one or two years. The humming-bird in one second does more than 90 waves by wings, and her heart fights with speed up to 500 beats per minute. Any bird is not capable to stretch long in such mode. The humming-bird organism quickly wears out and reaches limits of physiological age.
Birds who live only 2-3 months
There are birds which life expectancy is affected by neither a metabolism, nor the contents in bondage. And they, really, live less than a year. These are broilers. On poultry farms the age of a face of broilers is from 8 to 12 weeks. By this moment the weight of a broiler can reach two and more kilograms.