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An audio recording of a house sparrow. The house sparrow (Passer domesticus) is a bird of the sparrow family Passeridae, found in most parts of the world. It is a small bird that has a typical length of 16 cm (6.3 in) and a mass of 24–39.5 g (0.85–1.39 oz).
The word is most often used for the offspring of mammals, but can be used for any animal that gives birth to multiple young. In comparison, a group of eggs and the offspring that hatch from them are frequently called a clutch, while young birds are often called a brood. Animals from the same litter are referred to as littermates.
A marsupial has a short gestation period, typically shorter than its estrous cycle, and gives birth to an underdeveloped newborn that then undergoes further development; in many species, this takes place within a pouch-like sac, the marsupium, located in the front of the mother's abdomen.
In general smaller birds tend to hatch faster, but there are exceptions, and cavity nesting birds tend to have longer incubation periods. It can be an energetically demanding process, with adult albatrosses losing as much as 83 g of body weight a day. [6] Megapode eggs take from 49 to 90 days depending on the mound and ambient temperature.
The Cape sparrow usually breeds in loose colonies of 50–100 birds. 10 to 20 percent of the breeding birds in each population nest away from colonies, for unknown reasons. [20] The Cape sparrow is usually monogamous, but some records of a male and two females nesting and raising young in one nest have been made in Western Cape. [21]
Atlantic puffins spend the winter at sea and then return to the places of their birth, as has been shown by ringing birds. The breeding sites are usually inhospitable clifftops and uninhabited islands. Birds that were removed as chicks and released elsewhere were found to show fidelity to their point of liberation rather than to their ...
Beresheet, lunar lander formerly known as "Sparrow" IE 2700 and 2750 Classes (nicknamed Sparrow), Diesel Multiple Units in service in Ireland Sparrow (bot) is an artificial intelligence-powered chatbot developed by researchers at DeepMind
Oviparity occurs in all birds, most reptiles, some fishes, and most arthropods. Among mammals , monotremes (four species of echidna , and the platypus ) are uniquely oviparous. In all but special cases of both ovuliparity and oviparity, the overwhelming source of nourishment for the embryo is the nutrients stored in the yolk, pre-deposited in ...