Ornithologists have described a new bird species from the subantarctic islands

Ornithologists have described a new species of bird that lives on the Diego Ramirez Islands south of South America. It is called the subantarctic rayadito. In the past, the local population was thought to be the spiny-tailed rayadito, which is widespread in Chile and Argentina. However, the analysis showed that individuals from the Diego Ramirez… Continue reading Ornithologists have described a new bird species from the subantarctic islands

The algorithm determined the mouse's pain level based on its muzzle expression

American scientists have developed a cloud platform that can assess the severity of pain in black laboratory mice. She analyzes the expression of the animal's face – the position of its nose, ears, whiskers and the degree of squinting of the eyes. Previously, researchers coped with this task manually, but, as the results show, the… Continue reading The algorithm determined the mouse's pain level based on its muzzle expression

New Zealand cats caught hunting endangered bats

Zoologists have described two new cases of cats hunting endangered New Zealand bats. In one of them, a feral cat caught and ate a sheathwing in the forest, and in another, a free-roaming cat injured and killed several sheathwings near her home. As noted in the magazine article New Zealand Journal of Zoologymost likely cats… Continue reading New Zealand cats caught hunting endangered bats

Cheetahs will return to India after 70 years of absence

Cheetahs became extinct in India in the mid-20th century. However, they will soon return to this country. Eight cheetahs from Namibia will be released into Kuno Palpur National Park in Madhya Pradesh state in mid-August, The Guardian reports. According to the plan, the return of these cats will help restore the local ecosystem. However, some… Continue reading Cheetahs will return to India after 70 years of absence

DeepMind's algorithm has learned to distribute investors' money fairly

British researchers have developed an algorithm that learns to distribute funds between people in the way that is most preferable to them. During the experiments, people invested money in a common cause, and the distribution of earned funds depended on the applied policy: a simple rule, for example, payout in proportion to the invested funds,… Continue reading DeepMind's algorithm has learned to distribute investors' money fairly

Physicists solved the problem of the flight of a grappling hook

American physicists examined in detail the problem of the vertical flight of a grappling hook with a rope tied to it. They not only showed that the corresponding equation of motion can be derived within two different approaches, but also solved it analytically and numerically. Calculations have shown that the rope greatly reduces the degree… Continue reading Physicists solved the problem of the flight of a grappling hook

Stray cats caught hunting endangered marsupial mice from Kangaroo Island

Aitken's marsupial mice, endemic to Australia's Kangaroo Island, miraculously survived the clearing of natural vegetation and the catastrophic bushfires of 2019-2020. However, now the last of them are at risk of extinction due to stray cats. Zoologists have discovered the remains of eight Aitken marsupial mice in the gastrointestinal tract of seven cats. Considering that… Continue reading Stray cats caught hunting endangered marsupial mice from Kangaroo Island

Torn catnip leaves helped cats repel mosquitoes more effectively

Japanese scientists have discovered that when the leaves of catnip and Actinidia polygamum are damaged, more powerful repellents are released (compared to whole leaves), which help repel insects, including mosquitoes. This indicates that cats chew plant leaves to distribute iridoid compounds that protect them from pests. The study was published in the journal iScience. Cats… Continue reading Torn catnip leaves helped cats repel mosquitoes more effectively

Archaeologists found 250 sarcophagi with mummies and a cache of bronze statues in Saqqara

Archaeologists presented the results of excavations in the Saqqara necropolis, where they were able to discover a cache containing 150 bronze statues of ancient Egyptian deities. In addition, inside the shaft tombs they found 250 sarcophagi containing mummies from the late period, as well as a rich collection of artifacts, including well-preserved papyrus. Among other… Continue reading Archaeologists found 250 sarcophagi with mummies and a cache of bronze statues in Saqqara

The mating colors of chameleons introduced to Hawaii have become brighter in the absence of predators.

Zoologists have discovered that male Jackson's chameleons, introduced to the Hawaiian island of Oahu, display brighter colors during mating displays than their relatives from East Africa, where the species originates. This is probably due to the almost complete absence of predators dangerous to lizards on the island. As a result, male chameleons can afford brighter… Continue reading The mating colors of chameleons introduced to Hawaii have become brighter in the absence of predators.