Articles tagged with Birds
Researchers study rare warbler hybrid with mismatched color patterns to disentangle genetic drivers of traits usually inherited together. The team identifies new location in genome linked to black face mask and confirms previously identified region for black throat patch.
A 120-million-year-old fossil of a tiny bird found in China shares structural and functional features with the massive Tyrannosaurus rex. The discovery sheds light on the evolution of birds from dinosaurian ancestors.
A study from McGill University found that songbirds use similar speech patterns to humans, including shorter elements in longer phrases. The researchers suggest that physical factors such as muscle fatigue and limited lung capacities may play a role in these patterns.
A study from University of California San Diego demonstrates the possibility of re-creating a bird's song by reading its brain activity, laying the foundation for building vocal prostheses for humans. The approach uses machine learning algorithms to map neural patterns to mathematical equations modeling the physical changes in the bird...
A new study from the University of Utah reveals that more bird species in the Philippines may be endangered than previously thought, including those yet to be discovered. The research identifies key traits that make certain species more at risk of extinction, such as narrow elevation ranges and dependence on forests.
New research shows that dense sweet pittosporum canopies reduce bird richness and abundance, leading to declines in ground-dwelling birds. Restoration projects must balance weed control with retention of structural value to support local plants and animals.
A new study found that birds across the continental US tend to avoid backyard feeders in louder areas, while even more species stay away when both light and noise pollution are present. Common bird species such as American goldfinches and cedar waxwings avoid areas with excessive noise.
A new study found that darkening even some windows at night during bird migration periods could reduce bird collisions by 60%. Researchers analyzed data from McCormick Place convention center and found that half of the building's windows being illuminated resulted in 11 times fewer nighttime bird collisions during spring migration.
Bird collisions in Chicago are significantly correlated with high-intensity local migration, decreased moon illumination, and increased offshore winds. Minimizing building lighting at night may reduce collision rates among nocturnally migrating birds, according to a study by Benjamin Van Doren et al.
Researchers discovered that songbirds have fine control over their songs, including frequency control below one Hertz, and can activate single muscle fibers simultaneously. This high level of control is crucial for female attraction and speciation.
Researchers found that individual bird species respond uniquely to extreme winter weather events, with some experiencing population changes after polar vortexes. Winter heat waves also led to increased bird abundance and occurrence in affected regions.
A new scientific study suggests that dark 'eyeliner' feathers of peregrine falcons have evolved to reduce sunlight glare, thereby improving their hunting ability. The research found that the size and darkness of the malar stripe, directly beneath the eyes, vary positively with solar radiation levels.
Researchers studied the brain activity of singing male and female plain-tailed wrens, discovering that they synchronize their duets by inhibiting the song-making regions of their partner's brain. This inhibition allows for a seemingly telepathic performance, with the birds becoming a single entity through sensory linkages.
A study reveals that Eurasian jays are susceptible to illusions using fast movements, similar to humans. However, the birds are more influenced by observable motions than expected motions, differing from human perception.
A study published in PLOS Biology highlights the importance of diverse conservation strategies to maximize regional biodiversity and maintain ecosystem services. Researchers found distinct groups of species in 'Strictly Protected' areas compared to 'Restricted' and 'Non-Protected' sites.
Researchers assess Ethiopian bird species through six years' worth of bird banding efforts, finding high species richness near lower elevations and six new species at higher elevations. The study establishes baseline observations for tropical birds in East Africa.
A study examining global occurrences and population estimates for approximately 92% of all extant bird species found that there are approximately 50 billion individual birds in the world. Most bird species are rare, with only a few having estimated global populations of over 1 billion individuals.
A new study by the University of New South Wales estimates that there are approximately 50 billion individual birds in the world, with many iconic Australian species falling within this number. However, other rare species like the Black-breasted Buttonquail have only around 100 members left, highlighting the need for conservation efforts.
Researchers identified genetically marked neurons in a zebra finch's forebrain, revealing a landscape of physiology and network roles that mirror those in mammals. This breakthrough advances insight into the fundamental operation of complex brain circuits, suggesting ancient cell types retained features over millions of years.
A century-long study of bird species on Barro Colorado Island reveals that forest fragmentation leads to significant biodiversity loss, with species shifting towards drier habitats. Researchers found that birds living in wet forests are more likely to disappear from isolated habitat remnants.
Young zebra finches exposed to traffic noise developed songs with lower accuracy and were delayed in their vocal development. Chronic stress due to noise also suppressed the birds' immune function, leading to potential long-term health issues.
Researchers Constantina Theofanopoulou and Erich Jarvis demonstrate that the human hormone oxytocin is the same gene across all major vertebrate lineages, finding synteny in the hormone's receptor. They advocate for a new standard nomenclature to make life easier for scientists studying oxytocin and other hormones.
Researchers developed an innovative method using acoustic lighthouses to reduce bird strikes with tall human-made structures. By broadcasting specific sounds, these 'acoustic lighthouses' minimize the risk of collisions without visually disturbing birds.
A study published in PNAS found that zebra finches have a low-density lipoprotein receptor gene with key domains missing, allowing them to carry high levels of good cholesterol while avoiding high cholesterol-related diseases. This genetic adaptation may hold clues for improving cardiovascular disease treatment.
Research suggests that tolerance, cooperation, and reduced aggression in domesticated birds are linked to increased language complexity in humans. The study analyzed genomic, neurobiological differences between domesticated Bengalese finch and its wild relative, finding altered stress hormone balance and brain connectivity patterns.
A new study uses eBird data to identify areas of low Bald Eagle abundance, paving the way for citizen-science data to shape policy decisions. The research finds that eBird data is the most accurate and reliable source for assessing eagle populations, providing valuable insights for conservation efforts.
Researchers compared four main bird species lists worldwide, finding that they agree on most birds but disagree in some regions. The lists differ by application, and some regions are understudied, leading to missed species. This highlights the need for true diversity recognition to conserve biodiversity.
A new study by German researchers found that higher species diversity is positively related to mental health, with people living in regions with more plant and bird species reporting better mental well-being. However, the study did not find a significant relationship between biodiversity and physical health.
Researchers developed a wireless implant to rapidly change adult songbirds' songs, expanding the toolbox for neuroscientists to study brain behavior and vocalization. The device, about the size of a dime, can modulate specific neurons during birdsong, causing pitch changes.
A University of Colorado Boulder-led research team found the Iberá Seedeater, an endangered songbird, used genetic shuffling instead of new mutations for speciation. The bird's unique behavior keeps it apart from closely related species.
Researchers found scarlet macaws and Amazon parrots transported from over 300 miles away, eating the same diet as agriculturalists. Mummified birds were often eviscerated and mummified with their mouths open or wings spread in flight.
Researchers have identified two new species of critically endangered screech owls in the Amazon and Atlantic forests. The study used tape recordings to draw out the birds' calls, revealing variations indicative of different species.
A new study finds that female choice regarding mate traits drives the emergence of new species in Iberá Seedeater songbirds. The study reveals pre-mating isolation as a powerful force in maintaining reproductive barriers between co-occurring species, leading to rapid speciation.
A study by Indiana University researchers found that competition among free-living female songbirds changes gene activity in the brain, even after the interaction has ended. The effects can last up to two days and are related to epigenetic marks, which chemically modify DNA to link past experience with future behavior.
A University of Queensland-led study found that deforestation is severely affecting forest bird species in Colombia, leading to habitat loss for 69 endemic species and an astonishing reduction in overall species count.
In snowy plover species, females often abandon their broods to mate with new partners, a behavior that may be beneficial for parental reproductive success. The study found that females desert their broods primarily due to poor environmental conditions or when chicks have a good chance of survival without them.
Researchers found that bird parents who get help with childcare live an average of one to two years longer than those who do not. This is because helpers reduce the burden of care on parents, allowing them to reproduce again and again. The study highlights the importance of hard-working helpers in ensuring the longevity of bird parents.
A 30-year study in Tanzania found that warmer climates slow the population growth rates of tropical birds, particularly those with smaller bodies and lower elevation ranges. Climate effects on insect abundance, predator activity, or fruit timing may also negatively impact bird populations.
Researchers analyzed blood samples from over 1,000 bird species to understand malaria ecology. They found that the strains of malaria present in a local area don't always align with the types of birds living there, instead being influenced by weather patterns such as rainfall.
A survey of birdwatchers found that only 9% purchase bird-friendly certified coffee and less than 40% are familiar with it. Shade-grown coffee can help conserve habitats for migrating and resident bird species, but increasing awareness is crucial to mobilizing the estimated 45 million U.S. bird enthusiasts.
Researchers surveyed over 900 coffee-drinking bird-watchers and found that only 9% purchased shade-grown coffee due to lack of awareness about its impact on bird habitats. Increased advertising, availability, and collaborations may help raise awareness about the benefits of bird-friendly coffee.
A new study reveals a causal link between the decline of insectivorous birds and poor water quality, driven by human disturbance and pollution. The analysis shows that emergent insects, which serve as an important food source for birds, are highly sensitive to water pollution.
Researchers discover that male lyrebirds use mimicry to recreate the panicked alarm calls of a mixed-species flock during courtship and mating. This 'acoustic illusion' may be a crucial sexual behavior for males, helping them gain reproductive advantage by tricking females into responding as if they're at risk from a predator.
Researchers found that male superb lyrebirds create an acoustic illusion of a mobbing flock during courtship and copulation to trick females into staying with them. This complex behavior challenges traditional explanations of mimicry in biology, suggesting that elaborate bird songs can be driven by sexual conflict and deception.
Researchers found that Eastern bluebirds and tree swallows nesting in noisy boxes spent less time incubating eggs, had fewer eggs hatch, and produced fewer young than their neighbors. This suggests that compressor noise negatively impacted fitness through reduced hatching and fledging success.
Changes in wintering bird communities are significantly faster due to less sedentary behavior and warming temperatures, while breeding community changes are slower. The study tracked over 1,200 species since the 1980s, with rapid shifts towards southern species in Europe and North America.
A study by Cornell Lab of Ornithology scientists found House Sparrow populations declining in North America, with larger winter flocks in urban areas. The decline is attributed to a lack of urban green space and nesting sites, similar to European studies.
A new study found that introducing premium commercial food with high protein content from meat reduced the number of prey animals brought home by 36%, while five to ten minutes of daily play resulted in a 25% reduction. These non-invasive methods offer a solution for reducing hunting without restricting cat access.
A study led by Anglia Ruskin University found that farmers in the Brazilian Amazon can develop strong connections with nature, regardless of their knowledge of local bird species. The research involved 227 farmers and showed a complex relationship between ecological knowledge and nature connection.
A new study reveals that despite living in the same Mojave Desert location, mammal and bird communities experience different exposures to climate warming. Small mammals have remained relatively stable, while bird occupancy and species richness have declined dramatically due to their limited ability to mitigate rising temperatures.
Researchers found that deactivating the autism-linked FoxP1 gene in young songbirds prevents them from forming memories of their fathers' songs. This finding may shed light on speech development in humans and potentially lead to new treatments for children with autism.
Researchers found no evidence to support the claim that rare birds draw more birders, leading to additional discoveries. The study examined eBird data and mega-rarity sightings over 10 years, concluding little support for the Patagonia Picnic Table Effect.
The study found strong appreciation of natural features in Adelaide's northern metropolitan coastal wetlands, rating them highly for personal wellbeing. Residents developed an attachment to the coastline through activities, valuing these places as they became familiar with them.
A study by Durham University and RSPB investigated how human activities shape bird species' geographical distributions. The research found that 42% of breeding bird species would be more widely distributed if humans didn't impact the landscape, while 28% are rarer today than in a human-free world.
Female Bengalese finches exhibit a lifelong preference for their father's song compared to other birds. In contrast, male finches lose this preference as they mature, suggesting sex-specific differences in vocal learning and preference.
A study by University of Groningen researchers found that older female Seychelles warblers benefit from having helpers when raising their young. The data show that social behaviour increases reproductive success for older females, compensating for age-related declines in parental care.
Research from the University of East Anglia and the University of Groningen found that elderly parents' help in raising their young improves offspring survival rates. The study on Seychelles warblers highlights the benefits of cooperative breeding in social species.
Researchers use an ultrafast camera to observe the movement of laser light in a chaotic chamber, capturing the entirety of its path for the first time. This breakthrough could breathe new life into the study of optical chaos, with applications in physics, communications, and cryptography.
Researchers at Colorado State University and the University of Cincinnati have discovered a new mode of snake locomotion, called lasso locomotion, which enables brown tree snakes to ascend larger smooth cylinders. This discovery may help protect endangered birds from the snakes' impact.
A new study from Cornell University examines public attitudes towards non-native birds and whether people are willing to manage them to protect native cavity-nesting birds. Researchers found that citizen-science project participants were more likely to have negative views of non-native species and undertake management practices.