Researchers studied 3100 house sparrows from eight islands in northern Norway to examine the effects of inbreeding. The study found that inbred birds had shorter lives and reproduced poorly, with less genetic variation across their genomes.
Researchers successfully trained AI models to recognize individual birds using labeled images and camera traps, achieving over 90% accuracy in wild populations. This breakthrough enables long-term monitoring of populations and protects species from climate change pressures.
Researchers used AI to distinguish individual birds based on plumage patterns, a task humans struggle with. The technique was tested on three bird species and showed promising results, opening up new possibilities for studying animal behavior in the wild.
A doctoral student at Virginia Tech has been awarded a Fulbright Fellowship to research how migratory birds transmit diseases and carry pathogens. She aims to screen birds for various diseases in Trinidad and Virginia, determining which vectors and viruses are introduced during the winter months.
The Andean condor flaps its wings only 1% of the time during flight, with most movement occurring through air currents. Research using high-tech flight-recorders revealed that over 75% of wing movements are associated with take-off.
A recent study suggests that long-distance migratory birds are not declining due to an inability to advance their spring migration timing in response to climate change. Instead, improvements in wind conditions and land-use changes play a major role in shaping bird population sizes.
Three species of pink flamingos evolved to live in shallow lakes and breed during seasonal blooms of algae and zooplankton before the inland lakes dried up due to climate change.
A study published in Restoration Ecology found that mountain meadow restorations using the 'pond and plug' technique increased bird populations over time. The study's authors concluded that both hydrologic measures and vegetative measures were helpful in creating habitat for birds, with the latter approach accelerating positive impacts.
Researchers found that birds consuming dietary antioxidants before and during fall migration can reduce their endocrine stress response. This reduction in stress may be a major benefit for birds, allowing them to perform better during long-distance flights.
Researchers trained wild hummingbirds to discriminate between UV color combinations, revealing they can see up to five nonspectral colors. The study used a custom LED tube system and recorded over 6,000 feeder visits, showing birds can distinguish between various UV+color pairs.
Researchers found that pinker flamingos are more aggressive when competing for food in confined spaces. In contrast, birds fed outdoors with space to roam spend less time displaying aggression and double their foraging time.
A recent study found that birds in eastern North America are shifting their breeding ranges in response to climate change. Some species, such as Carolina wrens and red-bellied woodpeckers, may be resilient to future changes, while others, like Neotropical migratory birds, are experiencing range contractions. The research highlights the...
A study of 175 reports found that 32.3% of North American perching birds defend their territories against other species, with hybridizing species more likely to do so. Resource competition is a key driver of territorial behavior in these birds.
A new UCF study found microplastics in the digestive systems of 63 birds of prey in Florida, including hawks, ospreys, and owls. The researchers discovered nearly 1,200 pieces of plastic, mostly microfibers, which can lead to poisoning, starvation, and death.
A study by Toshitaka Suzuki found that birds can visualize a snake when hearing specific alarm calls from another species. The coal tit was observed to approach the experimental area during these calls, indicating it mentally retrieves 'snake' images.
A new study from the University of Sheffield reveals that bird species' development time is influenced by their lifestyle, environment, and evolutionary history. The research found that 'live fast die young' strategies allow birds to maximize offspring production in short periods.
Researchers discovered microscopic feather features in cassowaries, revealing the mechanism behind their glossy black shine. They also analyzed a 52-million-year-old fossil bird's feathers, finding structural colors that challenge previous assumptions about extinct species.
A new study found that zebra finches' material preference for their first nest is shaped by their juvenile experience of the material, but only in the presence of an adult. Birds who had access to an adult or material during adolescence built their nests faster and preferred materials accordingly.
Researchers at Lund University discovered a unique energy-saving strategy used by Arctic birds during the polar night, involving weakening their immune system. This adaptation allows them to conserve energy on keeping warm and finding food, but may pose risks when climate change alters migratory patterns and disease transmission.
Researchers found that birds and non-avian dinosaurs had similar brain sizes before the mass extinction, but after, some bird families evolved large-brained birds by shrinking body size. Parrots and corvids, including crows, showed exceptional cognitive capacity and rapid brain evolution.
Researchers found that whooping crane conservation efforts may inadvertently put the species at risk due to large flock formation. The birds gather in proportionally larger groups as they lose their habitat, increasing the potential impact of disease outbreaks or extreme weather events on a substantial portion of the population.
Red-winged blackbirds respond aggressively to a specific 'seet' call from yellow warblers when they detect the presence of brown-headed cowbirds. The birds also respond to other calls that signal general danger to their nests, including blue jay and cowbird chatter.
Scientists have developed a tiny device to study the avian magnetic orientation mechanism, challenging the prevailing photochemical theory. The experiment found that birds with portable devices attached were not disoriented when exposed to local oscillating magnetic fields, suggesting alternative components of the magnetoreception system.
Researchers found that birds with larger brains, like crows or gulls, can thrive in cities due to their intelligence. Conversely, small-brained species like pigeons succeed through frequent breeding attempts, prioritizing future reproductive success over present survival.
Researchers tracked the migration routes of little ringed plovers, a freshwater wader species, covering 3,108-4,226km over 32-136 days. The study found rice paddy fields to be their preferred wintering sites, with increased reliance during non-breeding seasons.
Researchers analyzed 98 historic specimens to find that different plumage patches evolved independently through time, with face and head patches evolving for mate recognition and back and wing patches for camouflage. This 'mosaic evolution' explains the lorikeets' dazzling color diversity while avoiding predators.
A recent study led by University of Southampton researchers reveals that threatened birds and mammals are often ecologically distinct and vital to their environments. The research highlights the importance of charismatic species, such as Emperor Penguins and Leopards, which play unique roles in maintaining ecosystem balance.
New research shows that feeding bluebirds can significantly impact parasitic nest flies and improve nestling survival. The study found that supplementing birds with food reduces the parasite load and improves antibody levels, which help kill the parasites. The timing of feeding is also crucial, with early feeding benefiting young birds...
A new study reveals that the rapid evolution of Darwin's finches and Hawaiian honeycreepers was linked to their beaks and skulls. The researchers found that these birds had a stronger association between their beaks and skulls than other bird lineages, allowing for more versatile evolution but constrained along specific directions.
A recent study published in Biological Reviews found no conclusive link between wild birds and human illness involving E. coli, Salmonella, and Campylobacter. The researchers highlighted the need for more definitive research to determine the risks of bird populations on food safety before taking action.
Research suggests that captive-bred game birds may be unprepared for life in the wild due to unnatural early life conditions. Mimicking natural conditions in captivity could promote more natural behavior and improve survival chances. Adding perches and unpredictable food supply are proposed solutions.
Researchers found that birds and mammals have encapsulated Golgi tendon organs set directly at the muscle-tendon junction, detecting tension in precise areas. This allowed for controlled motion and a selective advantage that conserves energy.
Researchers discovered that peach-fronted conures can collaborate with invisible partners to solve a task, showcasing their sophisticated communication skills. The birds demonstrated unique approaches to the task, with one bird waiting for its partner's signal before picking up the string.
Two new studies uncover the secrets behind birds' precise flight control, paving the way for more agile robotic wings. Researchers found that finger motion initiates stable turn maneuvers and 'directional Velcro' mechanisms lock feathers together during wing extension.
A new study reveals that the unique shape of hummingbird melanosomes and air bubbles within their feathers produce shimmering rainbow colors. This discovery opens up a greater understanding of how hummingbirds develop their vibrant plumage, with findings that could also shed light on color patterns in other birds.
Peregrine falcons have the fastest vision among birds of prey, registering up to 129 Hz blinks per second for high-light conditions. This exceptional visual acuity allows them to track fast-moving prey like flying birds and small mammals.
Research analyzing nocturnal bird migration found spring migrants arriving earlier than in previous years due to warming temperatures. This shift in migration timing may have negative consequences for migratory birds, as they rely on food and resources that are out of sync with their passage.
Over 40 years of data show that migratory birds have been getting smaller as the climate warms. The birds' body masses, leg bone lengths, and overall body sizes all decreased, while their wingspans increased, likely linked to rising temperatures.
A new analysis of a dataset of over 70,000 North American migratory birds found that body size decreased in all 52 species, with statistically significant declines in 49 species, while wing length increased in 40 species. The study suggests that warming temperatures may be causing these changes as an adaptation to climate change.
The researchers found that the modular structure of feathers enables birds to adapt to different environments. They also discovered the underlying molecular signals guiding feather development, including Bmp and Ski pathways.
Researchers discover avian predentary was covered by keratinous beak, mobile and proprioceptive, representing a unique feeding adaptation. The finding sheds light on the evolution of bird skull structure.
Researchers observed a dramatic shift from chaotic to ordered motion in jackdaw mobs as they grew in density. The birds initially follow 'topological' rules for winter roosting but switch to 'metric' rules for predator avoidance, leading to the emergence of organized behavior.
A DNA study reveals that ancient Egyptians did not domesticate Sacred Ibises for ritual use, contrary to previous theories. The research suggests that the birds were short-term tamed in natural habitats or farmed seasonally.
A new study reveals that North Sea fishing vessels discard over 267,000 tonnes of fish, enough to feed 3.45 million birds, and this figure has declined since 1990. The discarded fish support scavenging bird species, with the largest declines observed in northern fulmars, black-legged kittiwakes, and herring gulls.
Researchers have discovered a multilevel society in vulturine guineafowl, a small-brained bird species. The study found that the birds form stable groups with hundreds of individuals and associate preferentially with specific other groups, similar to primates.
Researchers found multilevel societies in a population of over 400 adult birds, with stable membership and associations between groups based on preference. This discovery raises questions about the evolution of complex societies and provides clues about the mechanisms underlying social behavior.
Researchers at Michigan State University have found that scents emitted by songbirds are produced by certain bacteria in preen glands, which identify a bird to other birds. Altering these bacteria can disrupt the bird's ability to communicate and find a mate, highlighting the importance of maintaining a balanced microbiome.
Researchers found that birds in constant traffic noise had lower levels of corticosterone in their blood compared to quiet environments. This suppression may protect against negative effects of chronic stress on the immune system. Chicks from noisy parents were also smaller but caught up after leaving the nest.
A study by Barbara Helm has shown that migratory birds' internal clocks have shifted forward in response to climate change, allowing them to arrive on their breeding grounds before the peak food abundance. This adaptation suggests that the birds' 'annual clock' can evolve quickly in response to changing environmental conditions.
A new study published in Science Advances sheds light on the evolution of bird flight styles, highlighting the importance of wing flexibility and wrist movement. Researchers found that birds specializing in gliding, like bald eagles, have a restricted ability to extend their elbows but can move their wrists freely.
A study published in PNAS reveals that corticobasal ganglia projecting neurons play a crucial role in song learning during juvenile development. In contrast, adult birds with disrupted projection neurons maintain their pre-learned song structure and exhibit normal vocal fluctuations.
A new study found a negative effect of three birds lost for every turbine within 400 meters of a bird habitat, but also suggests ways to minimize the impact through wind turbine design and placement. The researchers estimate that about 150,000 birds are affected by wind turbines in the U.S. every year.
A study by the University of Edinburgh found that warmer springs cause blue tits to begin breeding earlier, with chicks hatching after peak caterpillar numbers. This suggests that night-time temperatures and tree leafing cues influence bird reproductive timing.
Researchers found that European nightjars begin their autumn migration 10 days after the full moon and synchronize their flight to depart at the same time. The study reveals that moonlight affects the birds' activity patterns, enabling them to hunt more efficiently and replenish energy reserves.
Researchers found that jackdaws can identify individual calls and assess group size when deciding to join a mob. While they use a form of counting, there may be cognitive limitations to their ability.
Researchers have discovered that purple martins are roosting in small forest patches as they migrate from North America to Brazil. The birds seem to be intentionally seeking out these isolated habitats, possibly due to fewer predators than in larger forest areas.
A new study from UC Berkeley finds that hotter temperatures in the desert are causing birds to need more water to cool off, exacerbating a decline in species populations. Larger birds and those with insect or animal diets are most threatened by this heat stress.
European shags follow social cues by watching fellow birds to determine the best time and place to dive. This behaviour may help them save energy and find fish more efficiently. The study sheds light on the importance of understanding seabird species' adaptability in response to environmental pressures.
A single sorghum gene, Tannin1, controls bird feeding behavior by regulating the production of bad-tasting molecules and attractive volatiles. The discovery provides insights into plant-bird ecological interactions and suggests multiple strategies for developing new control measures to prevent yield losses caused by birds.
A study published in the journal Science reveals that US and Canadian bird populations declined by 29% between 1970 and 2020, with losses across diverse groups of birds and habitats. The results show pervasive declines among common birds across all habitats, including backyard birds.