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☆ Hens blush when excited or scared, study finds
▼ + stars: | 2024-07-25 | by ( Issy Ronald | ) edition.cnn.com time to read: +3 min

To understand how hens visibly express emotion, researchers spent four weeks on a French farm observing 17 hens of two different breeds, Bertin said, filming their routine behaviors and their reactions to different stimuli. Researchers observed 17 hens on a French farm. INRAE Arnould BertinTo make their more general conclusions, researchers extracted images from every two seconds of film and selected ones that featured the hen in profile to best study them. Although researchers weren’t able to explain the mechanism by which hens blush in this study, they concluded that the cheeks and ear lobes were more revealing of the birds’ emotions than their comb or wattles. Building on the results of this study, Bertin hopes to investigate whether these displays of emotion are linked to the hens’ social interactions, as well the implications for animal welfare.

Persons: CNN — Blushing, Charles Darwin, Aline Bertin, Bertin’s, ” Bertin, Bertin, –, INRAE Arnould Bertin Organizations: CNN, National Institute of Agricultural Research, University of Tours

☆ Some of the earliest-known cave drawings were from Neanderthals, not humans, and they're 57,000 years old
▼ + stars: | 2023-06-23 | by ( Jenny Mcgrath | ) www.businessinsider.com time to read: +5 min

57,000-year-old engravings on the walls of a French cave may have been the work of Neanderthals. The oldest Neanderthal cave engravingsThe markings are made up of lines, squiggles, and dots, likely made by fingers instead of tools. On the left are some curved lines and on the right are more wavy lines that researchers say were made by Neanderthals. Tim Schoon, University of IowaThough early researchers considered Neanderthals less advanced than humans, more recent findings have complicated that view. In 2018, researchers estimated a group of Spanish cave paintings were 65,000 years old and made by Neanderthals.

Persons: —, Claude Marquet, Shara Bailey, Homo sapiens, would've, Tim Schoon, It's, Bailey, sapiens, Cotard, lithics, La Organizations: Service, ONE, University of Tours, New York University, La Roche, University of Iowa Locations: France, La, Europe, Western Europe

☆ French cave markings may be oldest known engravings by Neanderthals
▼ + stars: | 2023-06-23 | by ( Katie Hunt | ) edition.cnn.com time to read: +4 min

CNN —Made by dragging fingers across relatively soft rock, lines, swirls and dots on the walls of a cave in France are the oldest known engravings by Neanderthals, according to a new analysis of the ancient marks. The finding adds to a growing body of evidence that Neanderthals — who have been characterized as dim-witted cave dwellers — were creative beings and more complex than the stereotype suggests. Neanderthals’ ‘deliberate composition’To understand how the markings were made and whether they were intentional, the researchers made detailed 3D models of the engravings from photographs of the Loire Valley’s La Roche-Cotard cave using a process known as photogrammetry. Based on the shape, spacing and arrangement of these engravings, the team concluded that markings in eight panels in La Roche-Cotard cave were intentional shapes and patterns created by human hands. At some cave sites in Spain, there’s evidence — albeit contentious — that Neanderthals created abstract motifs and hand stencils.

Persons: Jean, Claude Marquet, Cotard, La Roche, JC Marquet Organizations: CNN, University of Tours Locations: France, La Roche, Europe, Bulgaria, Spain

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