Articles tagged with Birds
New research reveals surprising differences in songbirds' diets and gut microbiomes in the Chornobyl Exclusion Zone. Contrary to expectations, birds growing up in radiologically contaminated habitats have a higher diversity of insects in their diet.
A study published in Ecology Letters found that humans have a greater impact on alien species diversity than geographic variables on most islands. Human factors such as colonisation pressure, habitat modification, and connectivity drive disparities in functional and phylogenetic diversity.
A new legal requirement for developers to demonstrate a biodiversity boost in planning applications may not be effective in improving bird and butterfly populations. Despite this, researchers suggest that the metric can capture plant biodiversity well, but needs improvement to reflect ecosystem intricacies.
Hybrids between two manakin species in Panama have remained relatively stable over the past 30 years, with minimal changes in genomic markers. The phenotypic transition zone also shows stability, with only one trait having shifted location, suggesting a potential selection for green bellies.
The American Ornithological Society has announced its 2024 award winners for early-career professionals, highlighting exceptional research in ornithology. The recipients include Sheela P. Turbek and Jessie L. Williamson, recognized for their work on bird diversity, behavior, and conservation.
Climate change may enable parrot colonization in Polish cities due to rising temperatures and altered ecosystems. The frequency of escaped parrots in urban areas could be an early sign of this phenomenon.
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.
Scientists studying the rifleman bird found that its vocal signatures are similar when birds live near each other, suggesting they may learn their sounds. This challenges the traditional view of birds as either vocal learners or non-learners, and raises the possibility that many bird species possess rudimentary learning abilities.
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.
Researchers found evidence of coevolution driving speciation in cuckoo species. Cuckoo chicks evolved to mimic host chicks to evade detection and exploit more hosts.
A new review emphasizes the importance of vaccination in preventing avian influenza spread among humans. The study suggests that a diverse range of vaccine platforms, including inactivated and live attenuated vaccines, as well as emerging alternatives like mRNA vaccines, will be crucial for enhancing pandemic preparedness.
Studies led by the University of Texas at Austin researchers found that bird song and human voice share a common genetic link, with the syrinx and larynx having similar developmental programming. This discovery highlights the shared ancestry between birds and humans in terms of vocal organ structure.
A study by the University of Göttingen investigated regional differences in bird diversity within cocoa agroforestry systems in Peru. The research team found that biodiversity decreases with increasing distance from natural forests, with greater richness of species found in humid subtropical forests than in dry tropical forests.
Researchers analyzed the calls of two male emperor penguins, E-79 and E-81, and discovered a unique combination of masculine and feminine characteristics. This finding could lead to new methods for studying penguin behavior and assessing their reproductive state, which is crucial for conservation efforts.
Judit Szabo has been appointed as the new editor-in-chief of Ornithological Applications, with expertise in conservation biology and ornithology. She will work closely with current editor-in-chief Catherine Lindell until June 2024 and take over full responsibility on July 1, 2024.
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.
Research at the Max Planck Institute for Biological Intelligence reveals that zebra finch chicks' first vocalizations play a key role in memorizing adult songs. The chicks' babbling is necessary to initiate the sensory phase of song learning, enabling them to store and recall the learned song.
A study from the Max Planck Institute found that storks choose routes with high densities of other storks, especially for young birds. As they gain migration experience, their preference decreases, suggesting a shift towards independence.
A study found that when adult male blue tits were absent, young males had higher success rates in fathering offspring outside of their breeding pair. Young males' poor performance was due to competition with older males, not lack of experience. In the absence of adult males, 33% of young males fathered at least one extra-pair offspring.
Rising water levels in East Africa's soda lakes are reducing the main food source for lesser flamingos, leading to declining populations. The birds may be pushed into new unprotected areas in search of food, threatening their survival.
A team of researchers from the University of Buenos Aires has developed a method to translate the vocal muscle activity of birds during sleep into synthetic songs. This breakthrough uses electromyography data and dynamical systems models to recreate the sounds of dreaming birds, providing a new window into the subconscious mind of avians.
The DISCount framework combines AI-powered image analysis with human analysis to quickly deliver reliable estimates of building damage and bird flock size. It has been recognized by the Association for the Advancement of Artificial Intelligence for its social impact, winning an award for best paper on AI for social impact.
Researchers at the University of Helsinki studied birdfeeder evolution as an example of multispecies design. The design changes focused on excluding species rather than feeding birds, with features like roofs, high sticks, small slits, and automated feeders.
A recent study found that 78% of the world's bird species struggle to thrive in heavily modified environments, leading to declining populations and increased risk of extinction. Conservation efforts can be targeted towards species most sensitive to human activity, such as the Great Snipe and Nkulengu Rail.
Researchers found that attaching red flags to crickets made them less appealing to predatory birds, suggesting a warning signal. The experiment supported the chemical defense explanation, as matador bugs were actively avoided with or without flags.
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.
A frozen chunk of a bird's genome has rewritten the understanding of the bird family tree, revealing that most birds were misclassified due to suppressed recombination. Scientists discovered that one section of the genome behaved unusually, leading to incorrect groupings and a more complex tree.
Researchers at Columbia University found that black-capped chickadees use unique patterns of electrical activity in their hippocampus to encode episodic memories, such as hiding and retrieving food. This 'barcode-like' mechanism may be a common tactic in animal brains, including humans.
Researchers found that Albert's Lyrebirds synchronize their footwork with the beat of their song and manipulate the environment by shaking thorny vines to create a choreographed courtship display. This behavior is thought to enhance the male's display, making him appear bigger and more vigorous.
A UK feasibility study suggests that a carbon credit scheme could support private investment in saltmarsh restoration, providing vital habitat for wildlife and addressing the climate crisis. The introduction of a Saltmarsh Code would pave the way for projects with public financing to contribute to restoration efforts.
Researchers at the University of Tokyo discovered that Japanese tit birds use wing movements as a symbolic gesture to communicate with their mates, mirroring human-like behavior. The study found that the birds' wing-fluttering display prompted the mate to enter the nest box first, while the one who fluttered entered second.
Researchers at UNIST have developed a groundbreaking technology that enables the real-time display of colors and shapes through changes in nanostructures. Utilizing block copolymers, they achieved the self-assembly of photonic crystal structures on a large scale, mimicking natural phenomena observed in butterfly wings and bird feathers.
Scientists have scanned over 13,000 vertebrate specimens using CT technology, making them available for free online. The scans provide a detailed view of internal structures, allowing researchers to study specimens in ways previously impossible.
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.
Researchers propose releasing a parasitic wasp to control an invasive avian vampire fly threatening Darwin's finches on the Galapagos Islands. The study found only two native fly species, emphasizing the urgent need to protect these native species alongside the iconic birds.
A University of Nevada, Reno study links strategic grazing to increased food supply for the greater sage-grouse, a keystone species in the Great Basin region. The research found that targeted grazing can boost insect populations and flowering plant growth, benefiting the species' reproductive phase.
A new technique employing a retrotransposon from birds may provide a safer alternative to CRISPR-Cas9 gene editing by inserting genes into a designated 'safe harbor' in the genome. This approach could complement CRISPR technology and enable efficient gene supplementation for hereditary diseases.
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.
Scientists at the UK Centre for Ecology & Hydrology have produced a comprehensive map of England's hedgerows, revealing over 390,000 km of field boundaries marked by these critical habitats. The new data will guide future habitat restoration efforts and support biodiversity conservation.
The Bay Area's Savannah sparrow subspecies is losing its unique adaptation to saltwater environments due to increased interbreeding with inland sparrows. Genetic analysis reveals a decline in the bird's genetic diversity, potentially affecting its ability to survive in tidal marshes.
Researchers found that growing fallow lands helps stabilize the population of the little bustard in Catalonia by providing food and shelter. To effectively conserve the species, measures such as reducing adult mortality and addressing power line collisions must also be implemented.
Researchers find laser scarecrows significantly mitigate bird damage to sweet corn, reducing crop loss by up to 20%. The technology is effective when combined with other non-lethal deterrents, offering a silent and sustainable solution for protecting crops.
A University of Queensland study found humans can correctly identify the emotional context of chickens' clucks, with 69% accuracy. The ability to detect emotional information from vocalisations could improve the welfare of farmed chickens.
A new study reveals that humans have driven the extinction of 1,430 bird species, with many becoming extinct before written records. The research suggests that major human-driven extinctions occurred in the 14th century and ninth century BC, with ongoing threats including climate change and invasive species.
Male songbirds need daily singing to exercise their vocal muscles and produce attractive songs. Regular practice is necessary to maintain social bonds and attract females, which can also hear the difference in a male's voice after exercise.
The study found that urban design favours species with varying characteristics, with implications for ecosystem improvement and public health. Land-sparing areas support birds with short life cycles, while land-sharing areas host species with longer life cycles.
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.
Researchers analyzed 13,000 hours of audio data from Okinawan forests before, during, and after typhoons, finding that ecosystems responded differently than expected. The study suggests that developed sites were more resilient to extreme weather than anticipated, but climate change may push these ecosystems to their limits.
A research paper reveals a suburban backyard is home to 1,150 unique species of animals, plants, and fungi. The study's authors discovered unexpected diversity, including 436 moth and butterfly species, 56 spiders, and eight reptiles.
Researchers found that Eurasian jays settle for less preferred food options when rivals are present, while New Caledonian crows consistently choose the better, delayed reward. The study suggests that species' social tolerance and competition levels influence self-control in animals.
Eurasian jays wait for higher-quality food when alone but choose low-quality reward with competitor birds present. Researchers studied delayed gratification in New Caledonian crows and Eurasian jays.
The study used various tests to analyze the memory performance of jackdaws, finding that their performance decreased when working memory demands increased. The researchers found that corvids, like humans, show reduced accuracy and biased representations when working memory demands are high.
Researchers have identified Australia's most hard-to-find species using over 3.8 million volunteer hours of birdwatching data, including the elusive Coxen's fig-parrot.
A new study found that urban waterfowl, including mallards and Canada geese, play a crucial role in spreading native and alien plants through seed dispersal. The birds disperse seeds for both aquatic and terrestrial plants, with mallards focusing on aquatic plants and geese on terrestrial ones.
A Cornell University study found that temperature variability, such as cold snaps and heat waves, reduces nesting success in songbirds. Nestlings are particularly vulnerable to these extremes, which can trigger mass die-offs if eggs and young birds are left exposed.
A team of researchers discovered 27 avian footprints on the southern Australia coast dating back to the Early Cretaceous period. The tracks provide evidence for early avian evolution and suggest a possible migratory route, with some tracks showing similarities to modern-day shorebirds.
A new study by University of Exeter researchers predicts which regions will be colonized by non-native birds, mammals, and plants. The study found that suitable habitats, dispersal ability, and history of introduction are key predictors of spread.
Researchers found that mothers increase egg size when they have more female helpers to feed their chicks. The study suggests that helpers allow mothers to invest more in offspring at the egg stage by lightening maternal workloads at the chick-feeding stage.
Researchers investigating sihek health have found that female birds are at greater risk for death and disease than males. The study also highlights reproductive diseases as a major threat to the species' survival, with females succumbing to these diseases more frequently.