Even on a winter day in Australia’s capital, Canberra, sulphur-crested
cockatoos and crimson rosellas are often seen.
Sulphur-crested cockatoos (Cacatua galerita) are large
white-feathered birds, native to Australia, with grey feet, black beaks, and
yellow crests. They are about 44-55 cm (17-22 inches) tall. Males and females
look similar. They can live up to 70 years in captivity, but only 20-40 years in
the wild. Females nest in trees and lay 2-3 eggs which take about 27 days to
hatch. Both parents keep the eggs warm and raise the nestlings until they can
fly (usually 9-12 weeks).
Crimson rosellas (Platycercus elegans) are parrots native to eastern
and south-eastern Australia, mainly in forests and gardens. They are
medium-sized at 36cm (14 inches) with long tails. They have brilliant red chests
with bright blue wings and blue cheeks. Males are a little larger than females,
but the young can be different colours (often greenish) until they gain their
adult red and blue feathers.
Rosellas are not migratory birds, so they will stay around the same region
and not travel far. They like to travel in pairs (and not in groups like sulphur-crested
cockatoos). When they mate, they stay with the same partner for life. Nesting
sites are hollow tree trunks, limbs, and stumps selected by the female. Females
lay 3-8 shiny white eggs and have an average incubation period of 20 days. Only
females keep the eggs warm.
Both rosellas and sulphur-crested cockatoos eat fruit, seeds, nectar,
berries, and nuts from a wide variety of plants. Often they will also eat
insects, including termites, aphids, beetles, weevils, caterpillars, and moths.
MARTINA NICOLLS is an international
aid and development consultant, and the author of:- The Shortness of
Life: A Mongolian Lament (2015), Liberia’s Deadest Ends (2012), Bardot’s Comet
(2011), Kashmir on a Knife-Edge (2010) and The Sudan Curse (2009).
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