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Torresian Imperial-pigeon

Scientific Name: Ducula spilorrhoa

The Torresian Imperial-pigeon is a large plump pigeon, 38-44 centimetres (15-17.5 inches) in length and with a 45 cm (18 in) wingspan. It is entirely white or pale cream, apart from the black flight feathers (remiges), part of the tail (rectrices) and spots on the undertail coverts.The head can be brown, soiled by eating fruit.

Behaviour:

It builds an untidy stick nest in a tree, usually a coconut palm and lays a single white egg, which hatches within 26 to 28 days.The squab fledges after another three weeks. In Australia they breed between August and January in mangroves, vines, palm fronds on off-shore islands,such as the Brook Islands. In north-east Queensland, they migrate daily as flocks from the islands to the mainland rainforests to eat fruit. They return to islands upon dusk.

Its flight is fast and direct, with the regular beats and an occasional sharp flick of the wings which are characteristic of pigeons in general. Males that display fly steeply up, pause, tip forward and then glide downwards.

This is an arboreal dove, feeding almost exclusively on fruit.It can swallow fruits with very large seeds, the latter being regurgitated or excreted whole, depending on size, after the pulp has been removed.

Calls made by the birds are a deep "mrrrooooo", "roo-ca-hoo" and "up-ooooo".

Threat:

The birds were once present in large colonies in Cairns, Australia but were subject to mass slaughter in the 19th Century because they were thought as pests. Populations rapidly dropped. The population is now slowly improving because of their protected status in Australia, where there are now an estimated 30,000. E. J. Banfield wrote in 1908 that in Dunk Island "fully 100,000 come and go evening and morning", with flying colonies as wide as two miles. It was described by Harold Frith in 1982, who stated these processions as "one of the great ornithological experiences of the tropics."

Nevertheless, it remains locally fairly common in parts of its range, and is therefore considered to be of least concern by BirdLife International.

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