Australia - Species Extinction

Giant Haast's eagle attacking New Zealand moa

A Haast's eagle attacks already extinct New Zealand moas. The largest moas were the female South Island giant moas. They could reach a weight of up to 300 kilograms. (© John Megahan, CC BY 2.5, via Wikimedia Commons)

2024-09-17 Doreen Fräßdorf

Haast’s Eagle

The largest bird of prey in modern times Before humans settled in New Zealand around 700 years ago and introduced invasive species like cats and rats, there were no land-dwelling mammals on the islands – aside from three species of bats. Instead, the ecosystem was dominated by approximately 250 bird

Male huias (bottom) reached a length of around 45 centimeters, while female huias (top) measured between 48 and 55 centimeters. The illustration is by John G. Keulemans from Walter Buller's A History of the Birds of New Zealand (1873). (© John Gerrard Keulemans, Public domain, via Wikimedia Commons)

2024-09-15 Doreen Fräßdorf

Huia

When males and females appear as two different species The pronounced sexual dimorphism between female and male huia caused confusion in the past. This confusion was so significant that, in 1836, the English ornithologist John Gould described male and female huia as different species. Even today, the development of gender-specific

A prepared huia pair (female on the right, male on the left) in the Thinktank Birmingham Science Museum. This specimen is not up for auction. (© Dr Mirko Junge, CC BY-SA 3.0, via Wikimedia Commons)

2024-09-15 Doreen Fräßdorf

Taxidermied Huia Pair Expected to Fetch Up to NZ$128,000 at London Auction

A rare taxidermied pair of huia birds could fetch up to NZ$128,000 at an auction in London. Organized by Roseberys London, the auction is scheduled for October 2024. The huia pair, consisting of a male and a female, dates back to the late 19th century and is considered extremely rare.

Mecodema oconnori belongs to the same genus as the Stephens Island weevil

Images of the Stephens Island weevil are rare; the image shows the ground beetle Mecodema oconnori, which belongs to the same genus. (© S.E. Thorpe, Public domain, via Wikimedia Commons)

2024-09-11 Doreen Fräßdorf

Stephens Island Weevil

From isolated paradise to endangered habitat Stephens Island, a small rocky island in the Cook Strait, is renowned for its unique wildlife. Despite covering only 1.5 square kilometers, the island boasts a remarkable ecosystem that was once home to numerous endemic species, including many land and seabirds. Among its notable

Traversia lyalli Stephens Island wren or Lyall's wren

The flightless Stephens Island wren, measuring around ten centimeters in total length, was a relatively small bird. (© Avenue, GFDL 1.2, via Wikimedia Commons)

2024-09-11 Doreen Fräßdorf

Lyall’s Wren

The tragic story of the Lyall’s wren Like the dodo, the Lyall’s wren, also known als Stephens Island wren, stands as one of the most well-known examples of bird species extinction, as the circumstances of its disappearance are both poignant and tragic. The story of the Lyall’s wren is often

New Zealand's unique birdlife evolved in isolation over millions of years. This late 19th-century illustration depicts a hunting scene involving moas. (© Joseph Smit, Public domain, via Wikimedia Commons)

2024-07-29 Doreen Fräßdorf

In the Footsteps of Moas: Where New Zealand’s Flightless Birds Find Refuge

The settlement of the Pacific Islands by humans led to rapid waves of extinction for many animal species, whose dynamics are difficult to reconstruct. Among the affected species were the wingless moas, which were only found in New Zealand. These often massive birds went extinct in the 14th or 15th

Male and female Tasmanian tiger, photographed around 1904 at the Washington D.C. National Zoo. (© Baker; E.J. Keller., Public domain, via Wikimedia Commons)

2024-06-10 Doreen Fräßdorf

Thylacine

Tasmanian wolf or Tasmanian tiger: Neither wolf nor tiger The name Tasmanian wolf might be misleading, as that animal was neither a wolf nor did it resemble one. Rather, its physique was more similar to a dog or dingo; with shorter front legs than hind legs, the thylacine even resembled

Bones of the North Island giant moa at the <a href="https://www.aucklandmuseum.com/" target="_blank" Auckland War Memorial Museum. (© Auckland Museum, CC BY 4.0, via Wikimedia Commons)

2024-06-01 Doreen Fräßdorf

North Island Giant Moa

The second largest moa species This moa species inhabited bush, grass, and dune lands, as well as forests on New Zealand’s North Island. The North Island giant moa is considered the second largest moa species. The largest species is the South Island giant moa, which was endemic to New Zealand’s

The bush moa is the smallest moa species known to date. It was only slightly larger than today's turkeys and reached a weight of around 30 kilograms. The flightless bird died out around 500 to 600 years ago with the colonisation of New Zealand. (© Auckland Museum, CC BY 4.0, via Wikimedia Commons)

2024-05-30 Doreen Fräßdorf

Deciphered Bush Moa genome provides insights into New Zealand’s extinct avian world

A team of evolutionary biologists has reconstructed the nearly complete genome of the bush moa (Anomalopteryx didiformis), a flightless bird from New Zealand that went extinct 500 to 600 years ago. Researchers from Harvard University, East Carolina University, Osaka University, and the University of Toronto sequenced ancient DNA from a

Replica of the Gigarcanum or Kawekaweau gecko from the Lille Natural History Museum in France. (© Musée d'Histoire Naturelle de Lille, CC BY-SA 4.0, via Wikimedia Commons)

2024-05-30 Doreen Fräßdorf

Gigarcanum (Giant Gecko)

The largest gecko in the world… In the early 1980s, French museum employee Alain Delcourt discovered a forgotten specimen of a single stuffed giant gecko in the basement of the Natural History Museum of Marseille, which had previously been on public display for years. This species was previously unknown to