Articles tagged with Birds
A team of researchers used cutting-edge 3D imaging techniques to study the syrinx, a unique vocal organ found in songbirds. The detailed structure reveals how birds can produce superfast trills and stabilize their sounds while moving.
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 recent study used bird watching records to build the first bird watching database in China, finding new national-level records and a trend of species moving to higher latitude and elevation regions. The database provides valuable data for scientific research on ecosystem health and biodiversity.
A new study comparing neural responses of birds and humans to music suggests that both share a neural reward system, with females in the breeding state responding similarly to human music. Male birds also exhibit an amygdala response to discordant sounds.
Scientists have created a statistical explanation for why some things are harder for the brain to learn than others by studying songbirds. They found that adult birds correct small errors in their songs more rapidly and robustly than large errors, which may help develop human behavioral therapies for vocal rehabilitation.
A new study suggests that climate change may have a lesser impact on bird populations than previously thought, with housing development potentially causing greater harm. The research found that some species projected to expand their ranges due to climate change may actually lose ground when faced with future development.
A study found that climate change is affecting boreal bird species populations, with some groups increasing in density while others are declining. The research suggests that habitat-specific responses to climate change may be driving these trends, with open mires and mountain heaths being more rapidly affected.
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.
Swans are found to have more common hip joint problems than previously believed, with CT scans revealing lesions in all five examined birds. The injuries likely occur during landing on hard surfaces, and the study suggests that computerized tomography is a better diagnostic tool for avian patients.
A new study on bird-like dinosaurs reveals that feathers were initially developed for insulation before evolving into a more complex wing structure. The research, published in Current Biology, explores the early evolution of bird flight and how it relates to dinosaur forelimbs.
Academics studied earliest theropod dinosaurs and found that feathers initially developed for insulation, evolving into display and camouflage features. This basic wing configuration has remained largely unchanged for 130 million years.
Vermilion flycatchers change song lengths in response to urban noise, unlike some other bird species that alter their songs by frequency. This adaptation helps them cope with noisy conditions and improve acoustic communication during breeding season.
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 at Max Planck Institute for Ornithology discovered that testosterone regulates solo song in African white-browed sparrow weavers. In females, testosterone treatment induced male-typical solo song development. The study highlights a complex relationship between hormone concentration and song behavior in tropical birds.
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.
A new study reveals that male mice can learn to match the pitch of other males' ultrasonic serenades, exhibiting certain brain features similar to those found in humans and song-learning birds. The researchers also identified genes specific to vocal behavior in mouse brains, previously only found in songbirds and humans.
Researchers found cells similar to mammalian neocortex in bird brains, contradicting long-held assumptions about their anatomy. The study opens up new animal models for studying the neocortex and its evolution.
Researchers discovered hummingbirds' reverse flight is cheaper than hovering and equally costly to forward flight, employing unique kinematic adjustments. The study found that the birds reduce wing beat frequency and inclination during backwards flight, making it 20% more efficient.
Researchers mapped the wildly divergent migration routes of two British Columbia subspecies of Swainson's thrushes using geolocators. The study reveals key feeding and rest habitats relied on by birds during their long journey, potentially informing conservation efforts.
Scientists at Duke University found that regions of the brain involved in planning and controlling complex vocal sequences are also necessary for memorizing sounds used in vocal imitation. This finding has broader implications for diagnosing and treating human developmental disorders.
A study led by Rice University found that the Pacific island of Guam has a staggering 40 times more spiders than neighboring islands due to the loss of forest birds caused by the invasive brown treesnake. The loss of birds, which consume spiders and compete with them for insects, has led to an increase in spider populations.
Researchers found that Western scrub jays gather around a dead bird's body and call loudly, attracting other birds to join in. The purpose of this behavior is unclear, but it may serve as a warning system or teach young jays about dangers.
Research found that desert-like, or xeric, yards have a more even bird community and superior habitat compared to moist, or mesic, grass lawns. Native plants in urban yards offer birds 'mini-refuges' and help offset losses of biodiversity in cities.
In a population of rock sparrows, researchers found that older and more successful males sang with higher pitches and slower tempos, while younger males sang with lower pitches and faster tempos. Cuckolded males, regardless of age, sang louder in an attempt to re-establish their pair bond with an unfaithful mate.
New studies reveal that changes in precipitation play a significant role in driving bird species out of their normal range, contradicting the conventional reliance on temperature. The research also found a sharp decrease in range for the Belding's ground squirrel, but identified areas where the species found refuge.
A recent analysis of avian feather lice reveals that their ancestors first colonized a particular group of birds and then radiated to different habitats, evolving into distinct species. The study found striking similarities in the adaptations of lice living in specific habitats on birds, which are attributed to convergent evolution.
Recent research on young songbirds found that elevated glucocorticoid hormones can improve movement, feeding, and anti-predator behaviors, leading to greater survival rates. The study, published in Functional Ecology, suggests that stress is more complex than previously thought and may be beneficial for vulnerable stages of development.
Researchers found that the most active males interacted with females and sired the most offspring, challenging the common view that reduced performance is an evolutionarily inescapable outcome of sleep loss. Despite this deficit, successful males returned to the breeding area more often and were more likely to sire offspring in their s...
A new bird species, the Sira Barbet, has been discovered in Peru's cloud forest with distinct color patterns and unique genetic characteristics. The team used mitochondrial DNA sequences to confirm its status as a new species within the barbet family.
Researchers found that birds experiencing dramatic seasonal swings in temperature and precipitation sing more variable songs. This adaptability helps them communicate effectively across different habitats. The study analyzed over 400 male birds from 44 species, including orioles, warblers, and finches.
A recent survey conducted at the University of California, Berkeley, found 48 distinct bird species within a 84-acre area, surpassing previous records from 1913 and 1938. The study suggests that urban green spaces can serve as islands of diversity, supporting a wide range of bird species.
Researchers from the Zoological Society of London identified the factors influencing the success of malaria parasites in New Zealand bird species, including two previously unknown strains. The study's findings provide insights into the traits that enable parasites to survive and thrive in new environments.
A new study reveals that restoring floodplain forests helps migratory songbirds survive the winter, providing vital habitat for birds from Alaska and Canada. The research also found that restored forests are equally preferred to existing older forests by some species, including Lincoln's and White-crowned Sparrows.
A new study reveals that baby songbirds learn and repeat the clearest versions of songs they hear, influenced by noise from nature and humans. This cultural selection process can lead to lasting changes in a species' top tunes, highlighting the impact of anthropogenic factors on bird communication.
Researchers at Oregon State University have developed an AI-powered system to monitor bird sounds, identifying species and changes in habitat loss or climate change. The technology uses a multi-instance machine learning approach, allowing for efficient ecological monitoring, and can be applied to other forest noises and animal species.
Researchers found that introduced white-eye birds outcompeted native Hawaiian species for food and resources, leading to stunted growth and feather replacement issues. This threatens the long-term survival of these endangered bird species, which are considered 'conservation reliant' in Hawaii.
Studies by University of Gothenburg researcher Daniel Gustafsson reveal that body lice can spread more easily than wing lice, defying expectations. Genetic data shows that almost identical body lice are found on most sandpipers worldwide, highlighting the importance of migration patterns and host bird size.
Brown-headed cowbird females are attracted to less intense wing spreading, feather puffing, and bowing during a display. This study reveals the opposite of what was previously predicted by sexual selection theory. The researchers used audiovisual recordings to investigate the female's response to male displays.
Researchers tracked changes in birdsong over time and found a strong link between the shift and increasing urban noise. Birds changed their tune to be heard above the cacophony of car horns and engine rumbles, with one dialect dominating the city's song repertoire.
Researchers found that deafening causes rapid changes to motor areas in songbirds' brains, predicting which birds will have worse songs. This study may provide insights into how hearing loss affects the human brain's vocalization control.
A new study by UCLA scientists has discovered that over 2,000 genes in the brain of zebra finches are significantly linked to singing. These genes, which include FoxP2 and reelin, may also play a critical role in human speech and speech disorders such as stuttering and autism.
A study analyzing eBird data finds that rising temperatures are altering bird migration patterns, pushing birds to arrive earlier in the year. This could negatively impact bird populations, especially slow migrators, as they may struggle to adapt to changing conditions and face increased competition for resources.
Researchers discovered that urban birds' songs are altered by city structures, which reflect and distort noise, affecting their ability to communicate effectively. This study, published in PLOS ONE, challenges the previous assumption that birds sing louder to drown out noise.
A team of researchers found a crucial connection between genetic variation and geographic distances in Florida Scrub-Jays. Maintaining or restoring networked scrub-oak habitats within 2-3 miles is essential for sustaining genetic diversity and promoting the species' long-term survival.
Researchers found that birds in changeable climates are more prone to infidelity and divorce. This may be because unpredictable weather conditions make it harder for birds to predict the environment during breeding season, leading them to seek new partners for increased genetic diversity.
Researchers found that older male white-crowned sparrows don't react strongly to young males singing in their territory, indicating they consider them less of a threat. In contrast, younger males within the same age group respond aggressively when hearing each other's songs.
A Duke University-led study finds that 80% of high-endemicity areas in the Andes lack protection, with hundreds of rare species under threat from human activities. The research highlights the urgent need for conservation strategies to protect this unique region.
Researchers found that birds prioritize specific tree species over others when searching for caterpillars, with the healthiest trees harboring the most caterpillars. This preference puts caterpillars at a higher risk of predation.
Researchers from the University of Hawaii at Manoa report that native forest birds are experiencing prolonged molting periods due to increased competition with introduced Japanese white-eye birds. This change in molt timing and duration is associated with food scarcity and has significant implications for bird survival and growth.
A USGS study found that climate-driven changes in elk behavior are causing cascading effects on plant and bird communities in mountainous Arizona. Elk's increased ability to browse on plants during winter is leading to decreased tree populations and habitat quality for songbirds.
Research in songbirds reveals glial cells and synapses can produce estrogen, a hormone linked to neurodegenerative diseases. This discovery could provide new insights into the prevention and treatment of conditions like Alzheimer's and Parkinson's.
In a study published in the Proceedings of the National Academy of Sciences, researchers found that individual monkeys who avoid conflicts prevent large groups from achieving their competitive potential. By defecting, members of larger groups can gain an advantage when defending their territory but not when invading others.
A new study by Duke University researchers has found that tropical birds are moving to higher elevations in response to climate change, but at a slower rate than predicted. The animals appear to be tracking changes in vegetation rather than migrating rapidly, suggesting a delay in their response to warming temperatures.
Researchers observed ravens using deictic gestures in the wild, such as pointing and holding up objects to test interest or strengthen bonds. This study suggests that complex communication systems may be more widespread than previously thought.
Scientists used 700- to 1,100-year-old Hawaiian ibis feathers to confirm the bird's classification as a close relative of the American white ibis and scarlet ibis. The plumage coloration revealed the bird was brown-black to ivory-beige, providing new insights into prehistorically extinct Hawaiian birds.
A growing body of evidence shows that man-made noise is bad for birds, particularly bigger birds with low-frequency songs. These species may be forced out of noisy sites because they can't hear each other over the din.
Research suggests climate change is increasing avian malaria and other mosquito-borne diseases in Hawaiian forests, threatening the survival of endemic bird species. Native birds have adapted to these changes by developing tolerance to malaria, allowing them to expand their ranges into previously inhospitable areas.
Researchers found that older male nightingales matched songs less often and overlapped songs more frequently with younger birds. This suggests a different strategy than previously thought, where older males may 'show off' to protect their territories by adding new songs to their repertoire.
A study led by Johns Hopkins behavioral neuroscientist Eric Fortune found that the brain prefers cooperative activity over solo ones, as demonstrated in plain-tailed wrens' duet songs. The research has implications for programming autonomous robots and understanding human social behavior.