The Norfolk thrush was mainly dark brown in colour, with a pale grey-brown head and upper breast. It was about 21 cm in length, with a wingspan of 34 cm and a weight of 55 g. It had a yellow bill, orbital ring and legs. Males and females were similar in size and appearance.[1]
Habitatedit
The Norfolk thrush used to be common in forest and was often seen in gardens adjacent to rainforest remnants.[2]
Behaviouredit
Breedingedit
The subspecies nested in trees, including the introduced lemon tree. The clutch size was 2–4.[3]
Feedingedit
The Norfolk thrush foraged mainly on the ground, in leaf litter, for small invertebrates, seeds and fallen fruit.[4]
Status and conservationedit
The subspecies became extinct around the late 1970s, with the last confirmed record in 1975. The cause of its extinction is attributed to a combination of clearing of native vegetation and predation by rats and feral cats. Additional factors were competition with introduced song thrushes and common blackbirds, as well as by interbreeding with the latter species producing sterile offspring.[5][6]
norfolk, thrush, turdus, poliocephalus, poliocephalus, also, known, grey, headed, blackbird, guava, bird, bird, thrush, family, endemic, norfolk, island, australian, territory, tasman, extinct, nominate, subspecies, island, thrush, turdus, poliocephalus, norfo. The Norfolk thrush Turdus poliocephalus poliocephalus also known as the grey headed blackbird or guava bird was a bird in the thrush family endemic to Norfolk Island an Australian territory in the Tasman Sea It is the extinct nominate subspecies of the island thrush Turdus poliocephalus Norfolk thrushNorfolk Island thrushConservation statusExtinctScientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClass AvesOrder PasseriformesFamily TurdidaeGenus TurdusSpecies T poliocephalusSubspecies T p poliocephalusTrinomial nameTurdus poliocephalus poliocephalus Latham 1801 Contents 1 Description 2 Habitat 3 Behaviour 3 1 Breeding 3 2 Feeding 4 Status and conservation 5 Notes 6 ReferencesDescription edit nbsp Pair by John GouldThe Norfolk thrush was mainly dark brown in colour with a pale grey brown head and upper breast It was about 21 cm in length with a wingspan of 34 cm and a weight of 55 g It had a yellow bill orbital ring and legs Males and females were similar in size and appearance 1 Habitat editThe Norfolk thrush used to be common in forest and was often seen in gardens adjacent to rainforest remnants 2 Behaviour editBreeding edit The subspecies nested in trees including the introduced lemon tree The clutch size was 2 4 3 Feeding edit The Norfolk thrush foraged mainly on the ground in leaf litter for small invertebrates seeds and fallen fruit 4 Status and conservation editThe subspecies became extinct around the late 1970s with the last confirmed record in 1975 The cause of its extinction is attributed to a combination of clearing of native vegetation and predation by rats and feral cats Additional factors were competition with introduced song thrushes and common blackbirds as well as by interbreeding with the latter species producing sterile offspring 5 6 Notes edit Higgins et al 2006 p 1870 Higgins et al 2006 p 1871 Higgins et al 2006 p 1873 Higgins et al 2006 p 1872 Higgins et al 2006 p 1872 NHMReferences editHiggins P J Peter J M amp Cowling S J eds 2006 Handbook of Australian New Zealand and Antarctic Birds Volume 7 Boatbill to Starlings Oxford University Press Melbourne ISBN 0 19 553996 6 Natural History Museum image reference 12226 nbsp This article about a thrush is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Norfolk thrush amp oldid 1029873042, wikipedia, wiki, book, books, library,
