| Golden bowerbird | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Passeriformes |
| Family: | Ptilonorhynchidae |
| Genus: | Prionodura De Vis, 1883 |
| Species: | P. newtoniana |
| Binomial name | |
| Prionodura newtoniana De Vis, 1883 | |
The golden bowerbird (Prionodura newtoniana) is a species of bird in the family Ptilonorhynchidae, the bowerbirds. It is endemic to Queensland in Australia, where it is limited to the Atherton region. [1]
The golden bowerbird has a patchy distribution in northeastern Queensland. It has a limited range and its population is thought to have declined as much as 60% over three generations of the species. It is a near-threatened species on the IUCN Red List, with the primary threat being climate change. [1] This bird lives in rainforests above 350 metres (1,100 ft) in elevation, including some habitat that has been disturbed by human activities such as logging. [1]
The male golden bowerbird has a brown head and brown wings which are bright yellow-gold underneath, as are the tail, crest and nape. The female is olive brown with ash-gray underparts. Immatures look similar to the female except their eyes are brown. [2] This is the smallest species of bowerbird. [3] [4]
The habitat of the golden bowerbird is upland rainforests from 350 and 1530 metres. Traditional bowerbird habitats include mild slopes, ridges immediately surrounding hill crests, and below steeper slopes where terrain levels off; canopy coverage is often greater than 70%; none on hilltops or in disturbed forest. [5]
Like most other bowerbirds, the male builds and maintains a bower over several years. Males do not grow their adult plumage for at least five or six years, during which time they wander, learn the social hierarchy of mature males, and practice building bower-like structures. Upon maturity, a male establishes his bower site, builds his structure, and spends much time decorating it. He may steal decorations from his neighbours, and defend his possessions from other males. During the breeding season, generally August through December, the male perches at his bower and produces a number of vocalizations, which attract females. [6]
The female establishes a nest in cup-shaped crevices, usually in tree trunks. There are one to two eggs per clutch. The nestlings are fed fruit and insects, and fledging occurs most often in January. [7] The life span ranges from 6 to 30 years, depending on the species. [8]
The golden bowerbird feeds mainly on fruits, and sometimes takes insects and spiders. [6] Fruits, especially those from vines, as well as flowers, buds, and arthropods. Nestlings eat largely fruits and a few insects, mostly cicadas (Cicadidae), with the percentage of fruit rising as the nestling grows older. Fruits and insects are eaten by fledglings. In the Paluma Range, males cache fruits, especially bunches of wild pepper (Piper), in crevices surrounding bower sites to be recovered for later use; one nesting female was spotted retrieving a cached fruit. Forages by sallying and seeking; cicadas are infrequently hawked. Usually eats alone; however, 3–4 (often juvenile) individuals may forage in the same fruiting canopy with other bird species, including other bowerbirds. [9]
Peak calling season is September–December. The sounds the golden bowerbird makes vary by populations. However, the typical male call song is a pulsating rattle note, which lasts 1-2 seconds and is repeated several times. Other kinds of calls include: squeals, screeches, scold-rasps, or wolf-whistle notes or a medley of them; also high-quality mimicry of calls of other bird species. In addition, the male birds are known to respond more strongly to the local dialects than foreign dialects. This means that when one of the male birds recognises the call they respond in a different manner than if they did not recognise the call. [10]
The golden bowerbird's population has decreased 20–29% recently due to the effects of cyclones that moved through their habitat, which destroyed many nesting areas. These cyclones and climate change continue to threaten the golden bowerbird's population, including heat waves that have resulted in lower resources for the birds. The birds' range is mostly within a conservation area, so they are afforded protection from many human activities. Currently, there are suggestions for further studies examining how the birds are affected by climate change in order to mitigate some of its effects. [1]
The swallow-tailed bee-eater is a near passerine bird in the bee-eater family, Meropidae.
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The melampittas are a family, Melampittidae, of New Guinean birds containing two enigmatic species. The two species are found in two genera, the greater melampitta in the genus Megalampitta and the lesser melampitta in the genus Melampitta. They are little studied and before being established as a family in 2014 their taxonomic relationships with other birds were uncertain, being considered at one time related variously to the pittas, Old World babblers and birds-of-paradise.
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