Acanthiza dal groppone fulvo

Tassonomia

Early classifications of the genus Acanthiza based on plumage and morphology recognised one to three genera with a varying number of species in each. However, recent classifications have recognised one genus containing five species groups or four groups excluding the New Guinean murina.<p>The taxonomy of the Acanthiza reguloides has undergone significant change and debate since its early classification. Despite marked differences between A. reguloides and A. squamata, they have been combined as a single species since 1926. Four subspecies of Acanthiza reguloides are recognised. These are:

Nome scientifico

Acanthiza reguloides

Autorità

Vigors & Horsfield, 1827

Ordine

Passeriformi

Famiglia

Acanthizidae

Genere

Acanthiza

Areale e habitat

Primarily distributed in eastern Australia, the buff-rumped thornbill's range spans from Chinchilla, Queensland, west to Cobar, New South Wales, across Victoria and southeastern South Australia. This is an area of approximately 2 000 000 km2. This adaptable species thrives in dry sclerophyll forests and open eucalypt woodlands that have an open or sparse understorey.

Migrazione

Resident species

Comportamento

Buff-rumped thornbills are often found in small, chatty groups of approximately 20 individuals, but may join during non-breeding season to form larger clans. They continuously twitter as they forage. Their vocalizations are characterized by a rapid pitta-pitta-pitta-pit call. They have a hearing range of 5000 Hz and a hearing threshold of 10 dB. In flight, Acanthiza spp. exhibit a characteristic undulating path. These birds are exceptional acrobats, displaying a remarkable ability to remain head downward. Birds are known to be territorial.

Conservazione

Bird populations are known to be secure in all states of Australia in which they are present. However, urban development and habitat modification has caused a decline in numbers in some areas.

Tendenza della popolazione

declining