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Birds in captivity are often heavier than wild specimens. Migratory birds gain weight before the migratory period but lose weight during handling or temporary captivity. Dead birds tend to weigh less than in life. The weight can vary by 5 to 10%, even during the day. The male emperor penguin loses 40% of its weight during incubation. [12]
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 ruby-crowned kinglet is a very small bird, being 9 to 11 cm (3.5 to 4.3 in) long, having a wingspan of 16 to 18 cm (6.3 to 7.1 in), and weighing 5 to 10 g (0.2 to 0.4 oz). [17] It has gray-green upperparts and olive-buff underparts. [18] It has two white wingbars and a broken white eye ring.
The male barn swallow returns to the breeding grounds before the females and selects a nest site, which is then advertised to females with a circling flight and song. [6] Plumage may be used to advertise: in some populations, like in the subspecies H. r. gutturalis , darker ventral plumage in males is associated with higher breeding success.
Wilson's bird-of-paradise is rather small. Males can reach a length of 16 centimetres (6.3 in) (21 cm including central rectrices) and a weight of 53–67 g., while females can reach a length of 16 cm, but a weight of 52–60 g. [4] The male is a red and black bird-of-paradise, with a yellow mantle on its neck, light green mouth, rich blue feet ...
The common crane is a large, stately bird and a medium-sized crane. It is 100–130 cm (39–51 in) long with a 180–240 cm (71–94 in) wingspan. The body weight can range from 3 to 6.1 kg (6.6 to 13.4 lb), with the nominate subspecies averaging around 5.4 kg (12 lb) and the eastern subspecies (G. g. lilfordi) averaging 4.6 kg (10 lb).
The infant joined siblings, Chance, 6, Everett, 5, Lucky, 3, and Marigold, 18 months. Everett was the smallest baby of the bunch weighing 9 pounds, 14 ounces.
For a sparrow, the Cape sparrow is strikingly coloured and distinctive, and is medium-sized at 14–16 cm (5.5–6.3 in) long. [3] Adults range in weight from 17 to 38 grams (0.60–1.34 oz). [4] The breeding male has a mostly black head, but with a broad white mark on each side, curling from behind the eye to the throat.