Researchers found that migratory birds rely on magnetic inclination and declination to determine their location, even when other components of the Earth's magnetic field remain unchanged. This challenges the 'map-and-compass' system theory and suggests a more complex internal navigation system.
Researchers used 16 years of radar weather data to monitor bird migration patterns from Tasmania to northern Queensland, finding millions of birds migrate each year. The study revealed unique patterns, including variation in migration direction, timing, and intensity compared to Northern Hemisphere birds.
Researchers studied an isolated population of sparrows on Lundy Island and found that older birds tend to have fewer friends, similar to humans. The study suggests that there is no 'evolutionary pressure' to maintain social connections in older age, leading to a decline in friendships.
Researchers at University College Cork found that wild birds' gut microbiome impacts their growth, weight, and survival. The study manipulated the birds' microbiome by feeding them beneficial bacteria Lactobacillus kimchicus.
Researchers from UMass Amherst have identified a key connection between ecology and speciation in Darwin's finches, famous residents of the Gal pagos Islands, Ecuador. The study shows that beak-driven changes to song impact species recognition, driving the separation of species.
Scientists discovered two new species of predatory birds in the Hell Creek Formation, which lived alongside dinosaurs like T. rex 68 million years ago. The fossils indicate that these birds could have hunted small mammals and baby dinosaurs using their powerful foot bones.
Fossilized enantiornithine birds from the Hell Creek Formation exhibit powerful leg muscles and feet adapted for carrying heavy prey, similar to modern raptorial birds. These discoveries expand our understanding of Late Cretaceous bird diversity and evolution.
Researchers discovered that seabirds like albatrosses and penguins have sensory receptors and nerves in their beaks that could aid in finding food. This ability might enable the birds to detect tiny vibrations from potential prey, potentially helping conserve these critically endangered species.
Researchers found that white-browed sparrow weavers in the Kalahari Desert build nests reflecting group-specific cultural traditions. The birds' social learning and preferences drive these architectural styles, which remain consistent even when they move between groups.
A University of Michigan study identified key changes in bird genomes sparked by the mass extinction event, contributing to the incredible diversity of living birds. The research found shifts in nucleotide composition linked to developmental traits like body size and metabolism.
Researchers used a family tree of 9,409 bird species to explore the spread of color across the globe. They found that iridescence originated outside of the tropics and in most cases arose 415 times across the bird tree of life, suggesting the common ancestor of all modern birds likely had iridescent feathers too.
Researchers found that fruit-eating birds eat more closely matched fruits near their geographic range edges, resulting in a narrower foraging niche. This specialization may help explain geographic variation in species' fitness and responses to environmental change.
A group of scientists has released a first-of-its-kind list of bird species that haven't been seen in over a decade, using public media databases. The study found 144 species, mostly threatened with extinction, with most concentrated in Asia, Africa, and Oceania.
Researchers have discovered that soaring birds use their lungs to enhance their flying capabilities by modifying the biomechanics of their flight muscles. The unique air sac, known as a subpectoral diverticulum, increases the force used to power flight muscles while soaring.
A study by Dr. Edwin Dalmaijer found that pigeons' desire for social proximity leads to improved flight paths as younger birds learn from older ones. This generational improvement in route efficiency is similar to those seen in real-life data, suggesting a key role for social factors in navigation.
A new Cornell University study suggests that smaller bird skeletons evolve more freely due to reduced stress on their bones. This allows for greater variability in wing proportions among small bird species.
A study published in PLOS ONE found that Eurasian jays can recall visual characteristics of cups with unique features after a 10-minute delay, demonstrating episodic-like memory. This ability may aid the birds in finding food stores and could be explored further.
A recent study found highly pathogenic H5N1 avian influenza in 6 city birds in New York City, collected through a community involvement program. The researchers found the virus belonged to two different genotypes and highlighted the critical role urban wildlife rehabilitation centers play in viral surveillance.
A recent study reveals that terrestrial insectivores in the Amazon rainforest employ behavioral and physiological adaptations to cope with rising temperatures, including modifying their warming routines and using water to regulate body temperature.
A recent study published in Proceedings of the Royal Society found that birds on islands are more evolutionarily similar and diverse than expected, with more species thriving in agricultural areas. The research suggests that there may be fundamental principles of ecology at play, influencing bird evolution on islands.
A study on zebra finch birds found that moderate noise exposure in eggs impairs growth, telomere length, and adult fitness. The research suggests that acoustic environments of breeding birds in cities should be better managed.
Researchers analyzed genomes of 363 bird species and found significant variations in cryptochrome 4 gene, indicating adaptation to environmental conditions. This specialization could be related to magnetoreception in migratory birds.
Fruit eating birds play a vital role in forest ecosystems by consuming, excreting, and spreading seeds to allow trees to grow and function. The study found that highly fragmented landscapes restrict bird movement, reducing carbon recovery potential by up to 38 percent.
A team of scientists has reconstructed the bird family tree using genomic data from over 360 species and nearly 200 fossilized birds. The study found that most modern bird groups appeared within a small evolutionary window, supporting the idea that birds thrived after dinosaurs went extinct.
Research at the University of Oxford discovered that socially connected great tit birds are more likely to use new foods, consuming twice as much novel food as less sociable individuals. This trend suggests that social birds expand their diets to mitigate competition costs, not increased exploratory behavior.
Researchers from the University of South Australia discovered that eating faeces helps birds absorb lost or deficient nutrients and adjust to seasonal variations in food sources. This coprophagy enables them to adapt to new environments and is especially important for long-migratory birds.
A new species of fossil bird, named Imparavis attenboroughi, has been discovered in northeastern China and is the first of its kind to evolve toothlessness. The bird's unique wing bones suggest it may have had strong wing beats and could have foraged on both trees and ground.
Scientists discovered a common trait among flying birds, including the number of primary feathers, to determine their evolutionary history. The finding provides clues about dinosaur flight and may inform debates on its origins.
Research reveals that red knot characters are formed in the first year of life, shaped by initial experiences in the Wadden Sea. Young birds exhibit more variable behavior and diet, while older birds have consistent food preferences and character types.
Scientists used stable hydrogen isotope data from 871 dead birds at California wind and solar facilities to understand the geographic origin of affected birds. The study found that most birds killed at solar facilities were nonlocal and varied among species, with local birds making up nearly half of those killed at wind facilities.
Researchers have identified over 2.4 million hectares of land as critical stopover hotspots for migratory songbirds in the eastern United States, primarily consisting of deciduous forests. Protecting these sites is essential to safeguarding bird populations, which have plummeted by a quarter since 1970 due to habitat loss and climate c...
Research reveals that an average of 1,000 times more birds are in the air close to fireworks on New Year's Eve, with effects strongest within the first 5 km. Larger birds like geese and ducks fly for hours at remarkable altitudes, risking accidents.
A study found that artificial light is a top indicator of where birds will land, leading to ecological traps and collisions. Urban parks can provide decent stopover sites, but competition over limited resources poses a significant risk to migrating birds.
Researchers have discovered a series of bird footprints from the Early Cretaceous period in Victoria, Australia, indicating that diverse birds lived in southern polar environments during this time. The discovery provides new insights into the distribution and dispersal of early birds across landmasses.
Researchers discovered that hummingbirds use two distinct methods to navigate narrow gaps: sideways movement and 'beak-first' flying. By employing these tactics, they can pass through openings as small as half a wingspan wide, showcasing their remarkable agility.
Researchers analyzed over 150,000 bird nests across the U.S. and found that extreme heat diminishes reproductive success in agricultural landscapes, but forests provide shade to increase nesting success. Curtailing emissions and promoting thermal refuges are crucial for conserving birds.
Researchers found a correlation between skeleton complexity and bird diversity, with less complex birds having higher species richness. Birds with more complex skeletons are more ecologically specialised, occupying fewer habitats and foraging in fewer ways, making them more vulnerable to environmental changes.
Researchers discovered that dinosaur feathers originally had a similar protein composition to those of modern birds, contradicting earlier findings. The study used X-rays and infrared light to analyze 125-million-year-old feathers from dinosaurs and early birds, revealing the presence of beta-proteins in ancient feathers.
Researchers in Sweden and the Netherlands have found that migratory birds can synchronize with food resources by flying a shorter distance, resulting in better breeding success. By giving these birds a helping hand, they may be able to maintain robust populations of small birds despite earlier springs.
Researchers found that two common songbirds have smaller eyes than their counterparts from less bright outskirts, adapting to urban light. This study suggests that sensory pollutants like human-caused light may play a role in the decline of bird populations.
A new study by Lund University reveals that disease affects blackbirds for three weeks, rather than just a day or two. The simulated bacterial infection stimulates the birds' immune system, causing them to stop their activities earlier in the evenings and have reduced daily activity periods.
A new study by the University of Oldenburg team confirms that radio waves in the VHF range above 116MHz have no impact on migratory birds' magnetic compass sense. This discovery debunks previous theories suggesting mobile communication networks affect the birds' navigation.
Scientists at Michigan State University used big data to study bird coexistence in the Albertine Rift ecosystem. They found that birds partition their habitat use along environmental gradients and adopt different strategies to survive, allowing them to coexist without driving each other to extinction.
A study of 379 cities across 6 continents found that city-dwelling organisms have evolved smaller body sizes, diverse diets, and changes in reproduction and foraging strategies. The 'urban trait syndrome' affects different species groups, such as birds, beetles, and reptiles, with varying levels of mobility and dietary adaptations.
The fossil discovery provides the earliest known evidence of birds consuming leafy greens from flowering plants. Analysis of microscopic residues in a 120-million-year-old bird skeleton reveals that Jeholornis was an herbivore, not a predator.
A recent study reveals that illegal bird shootings are now the leading cause of death for birds found dead near power lines in the western United States. Researchers analyzed 410 carcasses collected over four years and found that 66% died from being shot, surpassing electrocution as a leading cause.
A recent study by Tufts Wildlife Clinic found that approximately 30% of hawks and owls were positive for exposure to neurotoxic rodenticide bromethalin. This discovery expands upon the previous research on anticoagulant rodenticides, which showed that all red-tailed hawks tested were positive for ARs.
Birds, such as magpies and crows, are adapting to city life by using anti-bird spikes as nesting material. Researchers discovered these unique nests made of up to 1,500 metal spikes, showing the birds' creativity in avoiding traditional deterrents.
Research reveals that 176 bird species globally incorporate man-made materials into their nests, providing potential benefits such as structural support and insulation. However, these materials can also harm birds through entanglement, ingestion, or attracting predators.
A meta-analysis reveals that birds generally have a net benefit on production for some crops by controlling pests. Non-lethal measures to deter birds are effective in reducing crop losses. The study found that around 10% of bird species consume crops, with 65% showing a positive effect on woody crop yield.
The AOS released its 64th Supplement to the Check-list of North American Birds, including species lumps for the Western Flycatcher and Caribbean birds, as well as a species split for the Northern Goshawk. Five additional bird species were recognized in the Caribbean due to revised classification.
Researchers studying ancient bird fossils discovered that molting, the process of shedding and regrowing feathers, was more complex than previously thought. The discovery sheds light on how ancient birds, including those that survived the mass extinction event, developed this crucial survival strategy.
Research shows that wild birds in vineyards are highly susceptible to triazole fungicide contamination, disrupting hormones and metabolism, impacting reproduction and survival. Vineyards use significantly more fungicides than other crops, posing a unique threat to bird populations.
A new study found that birds produce fewer young if they start breeding too early or late in the season, with climate change resulting in earlier springlike weather. The researchers report that birds have been unable to keep pace with the changes, leading to a mismatch between the start of spring and birds' readiness to reproduce.
A study by the Netherlands Institute of Ecology found that great tits are struggling to adapt their breeding timing to cope with climate change, leading to a decline in population numbers. The researchers used innovative methods to speed up evolution and predict the impact of climate change on natural selection.
A recent study published in Scientific Data reveals that Finland's most visually appealing bird species are colourful birds, with large birds of prey also ranking high. The top 10 most attractive species include the snowy owl and kingfisher, which receive high scores on a visual aesthetic attractiveness scale.
A study reveals that birds in multispecies flocks from Southeast Asia converge on similar appearances, blurring species distinctions. This phenomenon may contribute to diversity by allowing birds to adapt and evolve distinct traits within a species.
Research from Lund University shows that feeding small birds during winter reduces the need to lower body temperature, allowing them to fight infections more effectively. This study highlights the importance of access to food during winter in modulating a bird's immune response and ability to combat infection.
Scientists at UMass Amherst found that migrating birds burn high amounts of protein early in their flights, which then taper off as the duration increases. This discovery challenges previous assumptions about bird migration and fuels further research into the evolution of metabolism.
Two new species of poisonous birds have been discovered in New Guinea's rainforest, containing a neurotoxin similar to that found in South American poison dart frogs. Genetic changes in these bird species allow them to tolerate and store the toxin in their feathers, potentially serving as a defensive mechanism.