Articles tagged with Birds
Researchers have successfully reared the larvae of a parasitic fly on chicken blood, paving the way for a new method to control its population. This breakthrough could be key to saving critically endangered birds like the mangrove finch in the Galapagos Islands.
Researchers have identified a genetic basis for songbirds' migratory routes, linking them to a small cluster of genes governing behavior. The study found that differences in migration patterns help maintain the diversity of songbirds.
A study confirms a rare case of mutualism between humans and a wild animal, the Yao tribe's use of a distinct call to attract a bird species as a honeyguide resulting in 75% successful discovery of beehives. Researchers found that the 'brrr-hm' call increased the probability of being guided by a honeyguide from 33% to 66%.
A new study found that baby migratory songbirds face different risks in the nest and after leaving, with some species experiencing higher mortality rates during post-fledging stages. Researchers used radio transmitters to track young birds and documented survival rates, shedding light on factors affecting their survival.
In a study of Purple-crowned Fairy-wrens, researchers found that females are more likely to initiate divorce due to dissatisfaction with their territory. Divorce allows females to gain better territories, which are crucial for reproductive success in this species.
Hummingbirds process visual information uniquely to navigate through dense vegetation at high speeds. They rely on the size of objects to determine distance and use image velocity to assess altitude.
The Cornell Lab of Ornithology has partnered with the Land Trust Alliance to launch the Land Trust Bird Conservation Initiative, aiming to improve bird conservation on private lands. The initiative provides technical support, workshops, and a Resources Directory to help land trusts enhance bird habitats.
Researchers found that blue tit males feed their partners more frequently when they are younger and less experienced, but less often when temperatures rise. This helps the females forage for food without interrupting incubation.
Researchers have uncovered a well-preserved fossil of a previously unknown bird species, Calciavis grandei, dating back to the Eocene epoch. The discovery sheds light on the evolutionary history of large flightless birds and provides new anatomical data for resolving contentious debates among paleontologists.
A study by University of East Anglia researchers found that northern wren populations are more resilient to harsh winter weather due to local adaptation. The team discovered a correlation between regional climate and population resilience, with larger body mass observed in colder regions.
Female beetles with fighting experience spend more time feeding their offspring, helping them survive. The study found that conflict-experienced mothers laid the same number and size of eggs but had a higher survival rate among their young.
Researchers at OIST Graduate University identified brain cells associated with auditory memory in zebra finches, revealing a potential key to understanding human speech development. The study found that these cells respond selectively to the tutor's song and are essential for learning and remembering complex songs.
A study by Vanderbilt University neuroscientist Suzana Herculano-Houzel found that birds have more neurons packed into their small brains than mammals or primates. The avian brain's smaller and denser neurons enable complex cognitive behaviors, rivaling those of primates.
Researchers found that females in the Chinese Hume Warbler species prefer males who sing simple songs over those with complex songs. This preference may be driven by the need to minimize predation risk and optimize nesting behavior.
Research by McGill University scientists found that juvenile zebra finches learned adult songs better when interacting with an adult, mimicking human-like speech adjustments. The study suggests social interaction can enhance vocal learning, which may have implications for treating autism and other developmental disorders.
Scientists have identified a cytochrome P450 enzyme that allows some bird species to convert yellow pigments into red colors, enhancing color vision and possibly signaling individual quality. The discovery fills a gap in understanding the genetics of red coloration in birds, with implications for future research on evolution and ecology.
Researchers have identified the genes responsible for producing the red pigment in bird species, linking it to detoxification processes and suggesting a link between mate quality and genetic fitness. The discovery provides new insights into the evolution and ecology of red coloration in birds.
Researchers found that hornbills' beaks account for up to 20% of their non-evaporative heat loss, helping conserve water in hot desert environments. This unique adaptation may provide an advantage over panting, a method used by birds to cool off.
Scientists found that an early Arctic spring in Africa is killing red knots by disrupting their food supply. The birds' short beaks limit their access to shellfish, essential for survival.
A study published in the Journal of the Acoustical Society of America found that birds can differentiate between whole and broken songs using spatial and intensity cues. The research used zebra finches and budgerigars, demonstrating that stream segregation is not a uniquely human ability
The primary threat to vultures is the presence of toxins in carrion they consume, leading to declines or extinctions of most vulture species worldwide. In their absence, other scavengers proliferate, causing a cascading effect on food webs and human populations.
Researchers found that both groups show a nested pattern of distribution, with narrow-ranging lineages concentrated in the tropics and broad-ranging lineages extending into higher latitudes. Species diversification drives expansion across climatic divides, increasing the likelihood of successful crossings.
Research on Black Sparrowhawks reveals that dark birds excel in low-light conditions due to better camouflage, while light birds thrive in brighter environments. This study supports the idea that color polymorphism arises from adaptations to distinct light conditions.
Researchers found corvid birds outperformed great apes in a cognitive task, despite having smaller brains. The study suggests neuronal density and brain structure play a key role in intelligence.
NSF-funded researchers develop computational sustainability to tackle ecological and economic problems. A new field combines computer science with environmental sciences to address challenges such as wildlife management and poverty-reduction.
Scientists have discovered a predictable trend in the evolution of bird shape among island birds, with flying birds adapting smaller flight muscles and longer legs. This adaptation is driven by relief from predators, rather than genetic divergence.
Broadbills make loud sounds with their wings to mark territory and attract females. Researchers found that it's not the outermost wing feathers but those just inside them that produce the klaxon-like sound.
A study by Durham University found that climate change is having a similar impact on common bird populations worldwide. Species favored by changing climates outperformed those disadvantaged by warming trends over a 30-year period from 1980 to 2010.
A team of international scientists has created the first 3D atlas of the dodo's skeletal anatomy, using two exceptional skeletons that have remained unstudied for over a century. The atlas provides accurate relative proportions and describes several previously unknown bones, opening new pathways for paleobiology and evolution research.
The New Caledonian crow's beak is shorter and blunter than regular crow bills, allowing it to hold tools in its binocular vision. This specialization led to the evolution of tool use in the crow's biology.
Researchers found that white storks rely on junk food from landfill sites for year-round sustenance, allowing them to establish resident populations. The closure of landfills may impact these birds' distribution, breeding locations, and migratory patterns.
Researchers discovered that estrogen-producing glial cells play a role in controlling inflammation in the injured zebra finch brain. The process happens within hours and could lead to new therapies for human brain injuries such as stroke, Alzheimer's disease, and Parkinson's disease.
Researchers found that Japanese great tits use specific rules to combine calls and convey compound messages, demonstrating non-human syntax. The study suggests that syntax may be a general adaptation to social complexity in communication systems.
Researchers discovered Japanese great tits have developed syntactic rules, combining calls like 'ABC' and 'D' to convey specific meanings. These birds use these rules to deter predators and attract partners, demonstrating a complex form of communication.
Researchers have pinpointed the effects of Huntington's disease on a specific brain area responsible for complex movements, such as talking or playing music. The study suggests that reintroducing normal patterns of activity in this area may be sufficient to restore normal behavior, offering potential therapeutic targets.
Researchers at Wake Forest University found that woodpecker pairs coordinate their defense behavior based on the intensity of drumming sounds from intruders. A longer drum is perceived as a tougher opponent, prompting coordination and aggression, whereas a shorter drum signals weakness.
Researchers found that female alligators near wading bird nesting colonies had higher body condition than those without active colonies. The study suggests a beneficial interaction between birds and alligators, where birds provide protection and chicks become a food source for the alligators.
A new bird species, Chongmingia zhengi, discovered in China's Early Cretaceous Jehol Biota, sheds light on the early evolution of birds. The species is basal to dominant Mesozoic avian clades and represents a new avialan lineage.
Researchers found that black widow spiders' red hourglass markings are more visible to birds than to insects, helping them avoid detection by predators while still warning off potential prey. This study highlights the complex communication strategies used by animals to adapt to their environments and evade threats.
Researchers at Cornell University found that fairy-wren pairs who sing duets are less likely to mate with other males, resulting in higher rates of their own genetic offspring. The strong duet-singing response also reduces cuckoldry in these pairs.
A study published in PLOS ONE found that adult male gorillas call more frequently than females and juveniles during feeding, especially when consuming aquatic vegetation, flowers, and seeds. This food-associated calling may help express well-being and aid group coordination and social cohesion.
Researchers used Doppler polarimetric radar data to study nocturnal migrating songbirds in Eastern North America. The study found that birds strongly compensated for wind drift near the Atlantic coast, increasing their compensation throughout the night.
A recent AAAS panel discussed the potential of citizen science and information technology to drive sustainability. Projects like eBird and Aviaching are collecting valuable data on bird occurrences and habitat representation, while UDiscoverIt accelerates the discovery of new sustainable energy materials.
Researchers discovered that male fruit flies adjust the amplitude of their courtship song based on distance from females, conserving energy and competing more effectively. This complex behavior sheds light on social interactions across the animal kingdom.
Researchers at the University of Cambridge found that reed warblers employ a 'neighbourhood watch' system to detect and eject cuckoo eggs, taking into account both personal and social cues. By combining information from close surveillance and neighbourly mobbing, warblers can assess levels of risk and protect their nests.
A recent study reveals the discovery of five extinct rail species in Madeira and Azores, highlighting the fragile nature of island ecosystems. The species evolved flightlessness due to habitat changes caused by human arrival, leading to their extinction.
A new species of bird, the Himalayan Forest Thrush, has been discovered in north-eastern India and adjacent parts of China by an international team of scientists. Genetic analysis reveals three distinct species within a previously thought to be single species, Plain-backed Thrush.
A new species of bird has been discovered in northeastern India and adjacent parts of China by an international team of scientists. The Himalayan forest thrush Zoothera salimalii has distinct differences in plumage, structure, song, and DNA from other related species.
Researchers found that early in adolescence, listening to a father's song activates brain cell networks used later for singing, while inhibitory interneurons 'lock' learned notes into memory by suppressing surrounding nerve activity. Fast learners showed faster brain changes.
A recent study published in the Journal of Neuroscience found that songbirds' vocal muscles can change their function to produce different sound parameters, similar to a trained opera singer. The research, led by Samuel Sober, shows that the bird's brain directs complex changes in muscle combinations to create complex songs.
A new key to all North European cuckoo wasp species has been published, featuring descriptions and illustrations of 74 species, including the newly described Chrysis borealis. The research team used DNA sequence information and morphometric analysis to distinguish the new species from its evolutionarily young sibling.
Researchers at the University of York and University of St Andrews observed greater vasa parrots using small pebbles or date pits to grind calcium from seashells, a behavior never seen before in this species.
A recent study found that humans and birds employ the exact same myoelastic-aerodynamic theory (MEAD) mechanism to produce sound. This discovery sheds light on the sophisticated vocal talents of songbirds and offers insights into the neural mechanisms underlying vocal learning in both humans and birds.
A meta-analysis of 75 studies found that birds in urban areas are more tolerant of humans than those in rural areas, while larger birds are more tolerant than smaller ones. This challenges previous recommendations about large-bodied species being vulnerable to human presence.
A new study reveals that climate change is driving bird declines in the Western Cape, with factors such as changing fire and rainfall patterns playing a significant role. The research found striking similarities between bird population declines and increases in average temperature, highlighting the need for urgent conservation action.
The study found that mercury affects the bright yellow hues on the great tit's breast, making males less attractive to females. Copper increases the size of the bird's 'black tie', while chrome reduces its area, impacting dominance and aggression.
Female black-capped chickadees produce acoustically distinct vocalizations from those of males, with birds able to tell apart the two sexes through different acoustic cues. The researchers found that females rely more on information in the second note of the song, while males focus on the first note.
West Nile virus is killing millions more birds and affecting many more species than initially thought. Survival estimates dropped dramatically in nearly half of the 49 studied species, highlighting the long-term effects of the disease. The research provides a warning for future infectious diseases that may affect humans as well.
Researchers studied three species of songbirds crossing the Gulf of Mexico, finding they use weather and body fat to assess migration risk. The findings can help protect migrating birds by identifying high-quality habitats along their routes.
A study analyzing 16 years of mark-recapture data found large-scale declines in roughly half of the species studied, including Swainson's thrush and tufted titmouse. Roughly half of the afflicted species managed to rebound within a year or two, including corvids like crows.