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Joined: 13 Mar 2011
Posts: 198
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 Posted: Mon Apr 25, 2011 7:14 pm Post subject: Young are fed and their fecal |
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A clutch consists of two or three matte cream-white eggs tapered oval in shape with reddish-brown splotches and spots, measuring 12 x 16 mm (.45 x .6 in).[54] The female incubates the eggs alone for around an hour at a time, after which the male calls her and she will leave to forage urgently for 15–30 minutes before returning. Her long tail is often bent from the cramped nest space and is a useful field indicator of nesting.[55] Incubation takes 14 to 15 days, a day less in later broods,[41] and an estimated 94% of eggs hatch successfully. The newly hatched nestlings are altricial–raw red in colour, naked and blind. Within a day, their skin darkens to blue–grey colour as their feathers develop underneath. Sheathed primary feathers emerge through the skin by the third day and eyes begin to open on the fifth day and fully open on the next. Young are fed and their fecal sacs removed by all group members for 11–12 days, by which time they are fledged. Though fully feathered, their tails and wings are not fully grown and they are poor fliers.[56] Their wings take another 10 days to develop fully, during which time they generally stay well hidden in cover near the nest. Parents and helper birds will feed them for around one month after fledging. Young birds often remain in the family group as helpers for a year or more before moving to another group. Birds reach sexual maturity at one year of age, but females tend not to breed until their third year as breeding vacancies are scarce.[57] The nests of Red-winged Fairywrens rarely play host to brood parasit
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