Researchers discovered that finches in the Galapagos Islands use treated cotton to kill parasitic fly maggots, protecting baby birds and potentially helping endangered species. The biologists tested this self-fumigation method on Darwin's finches, showing that it is effective against the nest fly Philornis downsi.
Scientists confirm the mafia hypothesis, which suggests that birds cooperate with parasitic birds to avoid retaliation, increasing survival rates of parasites. Host birds must learn and adapt to reject foreign eggs, while parasites use their behavior to extort hosts.
A Yale-led research team developed a new approach to species conservation that prioritizes genetic and geographic rarity. The method was applied to all 9,993 known bird species, revealing areas where maximum conservation of bird diversity can be achieved with minimal investment.
A new study by University of Sheffield researchers found that warm spring weather increases the survival rate of British small bird species. The research challenged a common assumption about the cause of death for these birds during winter.
A team of researchers from the University of Akron has made a groundbreaking discovery by identifying the missing hormone leptin in birds. Leptin plays a crucial role in regulating body fat storage, metabolism, and appetite, but its presence was unknown in avian species until now.
A study published in PLOS Computational Biology found that birds exhibit individual lateralization biases when choosing flight paths, enabling flocks to split and avoid crowding. This allows them to navigate complex environments, such as dense bush and forests, with remarkable speed and accuracy.
A global inventory of flu strains in birds has identified over 116 avian flu strains in wild birds, twice the number found in domestic birds. The study also reveals patterns of flu diversity in different bird hosts, with some strains specific to certain species.
Researchers found that waterbirds using different foraging strategies have evolved distinct tail shapes. Underwater foragers, such as cormorants and penguins, developed elongated tails with specialized vertebrae structures, while aerial birds had shorter, deflected tails.
Scientists discovered that key characteristics of flight, such as body size and forelimb length, evolved simultaneously in a group of dinosaurs. These findings suggest that birds arose through multiple evolutionary steps, with powered flight emerging later.
A study found that yellow-breasted chat males visit multiple territories at night to search for partners during their fertile period, increasing reproductive success. The researchers used radio transmitters and triangulation software to track the birds' movements, revealing a previously unknown behavior in diurnal species.
Researchers used custom-built GPS and accelerometer loggers attached to free-flying birds to study their aerodynamics in V-formation. The study found that birds precisely time their wing flaps to maximize upwash capture, while avoiding areas of downwash.
Research by Thanh-Lan Gluckman reveals that plumage patterning is labile in both males and females, with changes driven by environmental factors and signalling functions. The study challenges traditional views on sexual dimorphism, suggesting multiple types of dimorphism and adaptations to social and environmental conditions.
A study led by University of Manchester researcher Charlotte Brassey found that the leg bones of the tallest moa birds were similar to those of modern flightless birds that can run fast. The researchers used Finite Element Analysis (FEA) to estimate the weight and robustness of the moa, finding that different species had unique solutio...
Research at UEA found that individual birds arrive at the same time each year, but overall arrival dates are advancing due to climate-driven changes in bird hatching and nesting. This advance is linked to the aging of the bird population, with younger birds migrating earlier as a result.
Research by Guy Beauchamp reveals semipalmated sandpipers feed differently depending on group position, with peripheral birds acting as sentinels. The study sheds light on the mechanisms behind group living and its benefits for survival.
Bielefeld biologists have confirmed a genetic clock influences when young buzzards leave their parents' territory. The study, published in Molecular Ecology, found that four genes determine the timing of dispersal and plumage morph in sedentary birds.
Researchers used playbacks to examine the effects on wrens and antpittas, finding that repeated playbacks can stress birds and lead to wasted energy. Habituation occurred after daily playback for two-and-a-half weeks, suggesting minimal impact on wren behavior.
A study published in Cell Host & Microbe reveals that H7N9 avian flu viruses evolved from distinct H9N2 viruses through a two-step process. The viruses originated in wild birds and then continued to evolve in domestic birds, resulting in genetically diverse strains that could potentially spread among humans.
A study found that shy male birds are more likely to join flocks of birds with similar personalities than bold males. Shy birds also have fewer social partners and tend to form more stable relationships.
A Michigan State University study demonstrates that birds communicate via scents and that odor reliably predicts reproductive success. Researchers found that males with a 'male-like' smell and females with a 'female-like' smell had higher genetic reproductive success, influencing mate selection.
A University of Maryland-led research team found that young whooping cranes learn their migration route from older birds and get better at it with age. The study shows that individual birds' ability to stick to the route increases steadily each year up to about age 5, and remains roughly constant from that point on.
Researchers discover REVs originated in mammals and spread to birds through medical intervention, revealing an unusual evolutionary history. The study suggests REVs were introduced into poultry and subsequently into avian cell culture systems, impacting wild birds and domestic poultry.
A study conducted at CU-Boulder and Cornell University found that artificially darkening the breast feathers of female barn swallows decreases levels of oxidative damage to DNA, proteins, and fats. This suggests that the outward appearance of these birds has an influence on their physiological health.
Research reveals honeyguides lay eggs resembling host bee-eaters' eggs to avoid destruction by rival females. This mimicry helps conserve reproductive success in competitive environments.
Researchers are tracking the movements of 10 Great Shearwater seabirds in the Gulf of Maine using satellite tags, providing insights into ecosystem health and food supply changes. The birds' feeding habits and reactions to changes in their primary food source, sand lance, will inform conservation efforts.
A three-year study found that female blue tits with brighter UV-reflectant crown feathers fledge more offspring than duller females, experiencing lower levels of stress hormones during arduous periods of chick rearing. This suggests that male choice of mate based on plumage color may be a wise strategy.
A new study published in Nature reveals that at least a few non-avian dinosaurs had brains as large or larger than those of Archaeopteryx, indicating they may have had the neurological hardwiring necessary for flight. This challenges the idea that Archaeopteryx was uniquely transitional between feathered dinosaurs and modern birds.
Rising temperatures cause snakes to become more active, devouring mosquito-eating birds like the Acadian flycatcher. This increase in snake predation has severe consequences for agriculture, disease prevention, and tourism.
A new study found that birds can survive climate change through phenotypic plasticity, a flexibility in behavior. This adaptation enables them to track environmental changes, increasing their chances of survival. However, slow-reproducing species are more vulnerable to extinction due to the need for precise adaptations.
Researchers at the University of British Columbia have developed a vaccine to protect birds against West Nile Virus (WNV), which has killed over 300 people in North America. The vaccine, made from WNV components, generated an effective immune response in birds and may also offer protection against other species.
Researchers found that cockatoos employ a 'cognitive ratchet' process to solve the problem, suggesting they have a representation of the goal. After mastering the sequence, birds reacted with immediate sensitivity to changes in the puzzle box.
In a study, cockatoos solved a 5-lock problem by first removing a pin, then a screw, and so on. They adapted their approach when faced with altered sequences, suggesting they understood the structure of the problem. The birds' performance was characterized by flexible and sensitive reactions to changes in the sequence.
A new study by University of Exeter researchers found that winter feeding of wild blue tits resulted in smaller, lower-weight chicks with lower survival rates. This challenges the long-held assumption that providing extra food during winter benefits bird populations.
Researchers discovered that birds have normally developing penises in early embryos but lose them through a genetic program, suggesting possible benefits for reproductive control. The study highlights the importance of programmed cell death in developmental processes and may provide insights into medical questions.
Researchers found that young birds have a diverse range of bacteria in their guts, while adults have a more stable community of species. As birds mature, the number of bacterial species decreases, and a stable community forms.
A new study reveals that bumblebees use a 'buzz' warning signal to scare away birds from their freshly built nests. The researchers observed that the birds were distressed and often flew out of the nest when exposed to the buzzing sound.
A new study by Duke University finds that male song sparrows with larger playlists learn to solve food-finding puzzles more slowly than those singing fewer songs. This unexpected result suggests a trade-off between song learning and spatial memory in birds' brains, with potential implications for human brain development.
Researchers at George Mason University and University of Lincoln found that dinosaurs likely shared incubation duties with both moms and dads, contrary to previous claims of male-only care. This new analysis helps understand the evolution of incubation in birds and sheds light on dinosaur reproductive behavior.
Researchers found that a small meat-eating dinosaur called Troodon likely hatched its young in a way similar to brooding birds. The study provides insights into how dinosaurs incubated their eggs and supports the close evolutionary relationship between birds and dinosaurs.
Researchers are studying how bird loss affects Guam's forests by examining the distribution of 16 tree species. Without birds to move seeds to open gaps, pioneer trees may struggle to germinate or grow.
Research by the Zoological Society of London found that over 4,000 years ago, tropical Pacific Islands experienced a catastrophic mass extinction of birds, with around 1,300 species disappearing. The loss was largely due to overhunting and deforestation caused by human arrival.
A study published in Current Biology reveals that cliff swallows have decreased their mortality rates due to road collisions over the past three decades. The birds with longer-than-average wingspans are more likely to collide with vehicles, indicating that shorter-winged birds may be adapting to reduce fatalities.
Certain Australian native flowers have shifted from using insects as pollinators and evolved flower colour to the red hues favoured by birds. The study found that bird-pollinated flowers have spectral signatures that are best discriminated by those birds.
Researchers sequenced genes responsible for light-sensitive pigment in 40 bird species, revealing at least 14 shifts between violet and ultraviolet color vision. This evolution is driven by single nucleotide changes in DNA, resulting in unique visual adaptations among birds.
A team at Vienna University of Veterinary Medicine found the same strain of Usutu virus in dead blackbirds in Italy in 1996 as in Austria's cases. This suggests the virus was present in Italy before reaching Europe, and forensic pathology can help unravel origins of emerging diseases.
Researchers discovered that homing pigeons rely on 'loft-specific infrasonic map cues' to navigate, which are disrupted when release sites are shielded from these low-frequency signals. This finding resolves a long-standing puzzle and sheds new light on the birds' impressive navigation abilities.
Male swamp sparrows use wing waves as an aggressive signal to defend their territories and mates from intruding males. The study found that wing waves combined with song are more potent than song on its own, evoking aggression from live birds.
A study published in Physiological and Biochemical Zoology found that birds with pheomelanin-based plumage coloration had higher survival rates than those without it. The researchers suggest that the production of this pigment may help sequester excess amino acids, providing a beneficial effect under certain conditions.
A team of paleontologists has discovered a way to identify the sex of an ancient avian species, revealing that early birds began reproducing before they were fully grown. The study provides evidence for an important difference in when female avian species matured compared to modern birds.
Researchers discovered that female quail select egg-laying substrates based on the unique characteristics of their own eggs, maximizing disruptive coloration to avoid predation. By matching their egg patterning with surrounding colors, quail reduce the likelihood of their eggs being detected and eaten by predators.
A new fossil discovery reveals a bird with specialized teeth for eating hard prey, greatly expanding the known diversity of tooth shape in early birds. The find suggests that dietary differences may have contributed to the decline of enantiornithine birds during the Cretaceous period.
A study from the University of Copenhagen found that a drought in the Horn of Africa led to a delayed arrival of European songbirds in northern Europe, causing them to stay longer in Africa. This delay resulted in a late breeding year, but researchers believe it may not have affected population size.
Researchers found artificial light from industrial areas influences the foraging behavior of common redshanks, allowing them to forage more efficiently at night. This contradicts previous studies that reported negative effects of light pollution on wildlife.
The study reveals that early bird ancestors had more primitive wing designs, with simpler feathers that were different from those of modern birds. The researchers believe that these early wings may have worked effectively for gliding and high-speed flapping flight, but not for low-speed flight or ground takeoff.
Researchers discovered that wild birds were previously exposed to the West Nile virus before their arrival in Greece during autumn migration. The study found 14 positive serum samples from birds up to 8 months prior to the human outbreak, and genetic determinants of increased virulence were present in these samples.
A recent study by the Animal Health and Veterinary Laboratories Agency (AHVLA) reveals that young blackbirds can become 'drunk' on fermented rowan berries. The birds exhibited symptoms similar to those of human intoxication, including unsteadiness, loss of coordination, and tendency to fall over.
Researchers have created the world's first family tree linking every known bird species and found that they are accelerating their rate of evolution. The study reveals that birds' speciation rate is increasing, not declining, with no drop-off in tropical regions.
Researchers mapped out where birds live to show areas with most diversity, finding it accelerated in the Western Hemisphere. The 'phylogeny' could help prioritize conservation efforts by identifying species at greatest risk of extinction.
Researchers have created the most comprehensive family tree for birds, revealing recent and rapid diversification across nearly 10,000 species. Analysis shows that bird diversity has increased over the past 50 million years, with groups in northern North America and Eurasia exhibiting intense recent diversification.
Researchers discovered that migratory birds carrying ticks can transmit Crimean-Congo Haemorrhagic fever to new areas in southern Europe. The study found one bird species, the woodchat shrike, was a carrier of virus-infected ticks.