Orca Cannibalism and Other Strange Animal Behaviors

Science news this week featured unusual animal behaviors, including evidence of cannibalism among orcas, the discovery of a parasitic ant species, insights into prehistoric creatures, and concerning trends in bird populations.

Orca Cannibalism: A Complex Social Dynamic

Recent discoveries suggest that killer whales, too known as orcas (Orcinus orca), occasionally engage in cannibalism. Detached orca fins found on a Russian beach exhibited distinctive tooth marks, indicating they were bitten by other orcas. This behavior may be linked to the social structures within orca pods.

There are different types of orcas in the North Pacific. Resident orcas live in large family groups and primarily eat fish, while Bigg’s orcas live in smaller groups and hunt marine mammals like whales, dolphins, and seals. Researchers previously believed these types generally avoided each other, but novel evidence suggests this isn’t always the case. The cannibalism observed may explain why some orcas live in large, tight-knit groups.

Parasitic Ant Queens and Cloned Offspring

In other news, a Japanese ant species was identified as consisting entirely of parasitic queens. These ants create cloned offspring that invade the nests of other ant species, demonstrating a unique and unsettling survival strategy.

Prehistoric Creature with Unusual Jaw Structure

A prehistoric creature with a twisted jaw and sideways teeth was discovered, suggesting it was adapted for grinding down plant material or small invertebrates.

Declining Bird Populations

Bird populations are declining at an accelerating rate across key hotspots in North America, likely due to the impacts of agriculture.

Ancient China and Mega-Typhoons

Analysis of 3,250-year-classic oracle bones – the earliest known form of Chinese writing – reveals evidence of mega-typhoons impacting China’s Shang dynasty. Scientists found an increase in divinations related to rainfall and water-related disasters, suggesting growing concern over extreme weather events.

Other Science News

• Scientists taught robots to swim through mazes using principles of Einstein’s relativity.
• A new drug shows promise in treating a devastating form of epilepsy in children.
• A Chinese EV maker claims to have engineered the world’s first semi-solid-state EV battery with a 620-mile range.
• Research highlights the interconnectedness of humans and the environment, emphasizing the importance of using satellites and real-world experiences to support farmers facing challenges in India.
• A total lunar eclipse, or “blood moon,” dazzled millions of observers worldwide.
• Mathematicians are exploring the possibility of knots in four dimensions.

Science Spotlight: Cranial Modification

The practice of intentionally altering head shape (cranial modification) has been observed in cultures throughout history. Researchers are investigating the reasons behind this widespread body modification trend.

Science News in Pictures

A stunning photograph captured by Elle Leontiev features Philip, a self-taught volcanologist, standing barefoot by the slopes of Mount Yasur in Vanuatu. Philip studies the volcano’s activity and prefers to walk barefoot on the volcanic terrain.