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  1. How do birds make decisions and which brain regions are particularly active when they solve tasks? Researchers from the Department of Biopsychology at Ruhr-Universität Bochum (RUB) are investigating these questions. So far, only anesthetized birds and therefore passive experiments could be examined using the functional magnetic resonance imaging (fMRI). Thus, the examination of brain processes during active tasks was not possible. Now the cognitive neuroscientists at the Biopsychology lab have constructed an experimental set-up which allows them to carry out fMRI examinations on awake pigeons and thus also investigate cognitive processes for the first time. They published their results online in the journal Nature Communications on 18 September 2020.

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  2. Maureen Murray, V03, director of Tufts Wildlife Clinic and clinical associate professor at Cummings School of Veterinary Medicine, has been studying rodenticide exposure in birds of prey for over a decade. Exposure to rodenticides occurs when people use these chemicals to kill unwanted pests. Mice and rats, or possibly other animals, eat the poison, and then the birds eat the poisoned prey.

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  3. Long-distance animal migrations can trigger relapse of dormant infections, influencing when and where infection risk peaks, according to a new paper in Proceedings of the Royal Society B. The findings demonstrate that relapse can increase or decrease infection levels in migratory species, depending how deadly the disease is, and where in the migratory range it can be transmitted. As migratory animals often carry diseases that can jump from animals to humans, understanding how migratory relapse can shape infection risk has implications for public health.

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  4. Protected areas are considered the most important tool for curbing the ongoing biodiversity loss, but a lack of field data hampers efforts to measure how effective they are in practice. Scientists analyzed records collated by thousands of citizens and showed that protected areas are contributing significantly to the conservation of rare and threatened birds across tropical forests hotspots by preventing deforestation and forest degradation.

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  5. New research in songbirds sheds more light on the decision-making process in the brain. In this study, researchers discovered that sensory input from the locus coeruleus—the area of the brainstem known primarily for mediating arousal and modulation of sensory processing—has a direct impact on motor action. In other words, these inputs mediate the switch between the highly variable exploratory skill birds produce when practicing their song alone compared to the low variability songs birds produce to impress their female counterpart. The findings were recently published in the Journal of Neurophysiology (JNP). The article has been chosen as an APSselect article for September.

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  6. Conservation action has prevented the global extinction of at least 28 bird and mammal species since 1993, a study led by Newcastle University, UK and BirdLife International has shown. The species include Puerto Rican Amazon Amazona vittata, Przewalski's Horse Equus ferus, Alagoas Antwren Myrmotherula snowi, Iberian Lynx Lynx pardinus, and Black Stilt Himantopus novaezelandiae, among others.

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  7. A team of researchers from the U.S. and South Africa has discovered that several species of hummingbirds living in the Andes drastically reduce their body temperatures during their nightly torpor. In their paper published in the journal Biology Letters, the group describes their study of thermoregulation in mountain-based hummingbirds and what they learned about them.

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  8. When acorn woodpeckers inhabiting high-quality territories die, nearby birds begin a battle royal to win the vacant spot. Researchers used radio tags to understand the immense effort woodpecker warriors expend traveling to and fighting in these dangerous battles. They also found spectator woodpeckers go to great lengths to collect social information, coming from kilometers around just to watch these chaotic power struggles. The work appears September 7 in the journal Current Biology.

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  9. In 2013 the Rim Fire—the largest fire on record in the Sierra Nevada—burned one third of the potential California Spotted Owl (Strix occidentalis occidentalis) habitat in Yosemite National Park. The park provides prime habitat for this Spotted Owl subspecies, which is listed as a Species of Special Concern by the California Department of Fish and Wildlife, and concern grew regarding the fire's effect on Yosemite's owl populations. But recent research provides some good news regarding the park's owls, and it may be due to Yosemite's unique history and fire management strategy.

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  10. Bird calls can be iconic, and to many Missourians, some have come to define landscapes. Waking up to the complex song of an eastern meadowlark in grassy fields at dawn, the gentle "coo" of mourning doves throughout the day, and rocking on the front porch to the playful song of the whip-poor-will on a warm summer's night. However, one iconic call has not been heard in Missouri's landscapes for some time: the "rubber ducky squeak" of the brown-headed nuthatch.

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  11. So far, the majority of studies investigating brain functions and intelligence have been carried out either on humans or animals that are known to be most similar to humans, such as monkeys, apes, and other mammals. Nonetheless, some avian species, including corvids and parrots, also have sophisticated and surprising cognitive skills, which are sometimes comparable to those of large-brained mammals.

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