Nesting and Life Cycle
Satin Bowerbirds nest between October and February. Typically two eggs but occasionally one or three are laid in a shallow nest of twigs on top of which are placed leaves of Eucalyptus or Acacia. These leaves turn brown as the eggs are laid, and may serve as camouflage. The eggs are cream but streaked with brown, and are much larger than typical for a bird of its size at around 19 grams (0.67 oz); they are laid every other day and hatch asynchronously after 21 days of incubation.
The young are able to fly three weeks after hatching, but remain dependent on the female for another two months, finally dispersing at the beginning of the southern winter (May or June).
Female Satin Bowerbirds mature at two to three years but males do not reach maturity until seven or eight years when they have moulted completely into their characteristic blue-black adult plumage. The Satin Bowerbird is the longest-lived passerine with anything approaching high-quality banding data: it is estimated that the average lifespan of the species is around eight or nine years, whilst the record longevity in the wild of twenty-six years is the greatest for any banded passerine.
Read more about this topic: Satin Bowerbird
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