Articles tagged with Bird Flight
Researchers at Brown University have developed an aerodynamic model that simulates the forces at play when birds fly in a V formation. The model shows that birds experience an 11% reduction in mechanical power needed for flight due to reduced wing flapping, leading to significant energy savings.
Researchers at Kyushu University identified a molecular mechanism behind keel formation, revealing that a developmental
Researchers used a technique called theoretical morphospace to analyze bird wings, finding that many species have wing shapes ill-suited for their flight performance. Penguins and hummingbirds stand out as exceptions, having evolved optimally shaped wings for their specialized styles of movement.
A new study reveals how birds shift their shape in flight to navigate obstacles, offering insights into improved UAV designs. The research, published in Journal of the Royal Society Interface, used motion capture and wind tunnel modeling to analyze a Harris's hawk's flight patterns.
Scientists at Lund University have tracked migratory red-backed shrikes using new data loggers, showing precise schedules and minimal variation between individuals. The study provides insight into genetics influencing small bird migrations across continents.
Researchers discovered a new 233-million-year-old nonflying relative of pterosaurs that provided breakthrough insights into the evolution of flight in these animals. The study found that pterosaurs evolved their own 'flight computers' from scratch, with unique brain structures and smaller brain sizes compared to birds.
Research reveals that young robins reduce their nighttime activity and food intake when exposed to tawny owl calls, leading to slower energy buildup and poorer physical condition. This adaptation helps them balance the risk of predation against the need to replenish energy reserves.
A new study from Lund University shows that migratory birds are most efficient at an intermediate flying speed, with energy conversion efficiency reaching up to 15% of metabolic energy. This discovery helps construct more accurate models of bird flight and explains how small birds complete transcontinental journeys.
Researchers found clear evidence of air sacs in fossilized alvarezsaurian bones, which may have helped modern birds fly. This discovery provides new insights into the evolution of bird flight and the role of 'hollow bones' in this process.
Researchers highlight the underuse of Japanese bird banding data in avian movement research, revealing gaps in our understanding of East Asian migratory birds. The study proposes improving data accessibility and integrating traditional methods with modern tracking technologies to advance conservation efforts.
The Cuban blue-headed quail dove is an enigmatic bird species with a perplexing evolutionary history. Its DNA analysis reveals it to be more distinct from other doves than previously thought, dating back at least 50 million years.
Researchers compared feathers and bodies of flightless birds and their flying relatives, finding that some features change relatively quickly. The study sheds light on evolution of complex traits that lose original function, and could help reveal which fossil birds were flightless.
A Cornell University study used a computer model to predict the transmission of bird flu to backyard poultry when migratory mallards stop to rest. The researchers found that mallard ducks are natural carriers of avian influenza and can spread the disease to backyard poultry if they stop to rest in an area with high risk for introduction.
A new study reveals that PFAS are found in larger volumes than before, with a significant increase in the livers of wading birds. The researchers used a new method called the Total Oxidizable Precursor (TOP) assay to detect these substances.
Scientists discovered that dry museum skulls of long-dead birds can provide surprisingly detailed information on their brain structures. The study found a nearly 1:1 correlation between the brain's volume and digital imprints, allowing researchers to gather insight into elusive species without seeing their brains.
Researchers tracked spur-winged lapwings in urban and rural areas, finding that city-dwellers are more mobile, especially during nesting season. The study also reveals seasonal differences in exploration patterns between males and females, highlighting the complex impact of human presence on bird behavior.
Researchers found that cavity-nesting birds are more likely to use shed snake skins in their construction, which helps deter predators from eating eggs. The practice is thought to be an evolutionary adaptation to reduce nest predation, with benefits most strongly expressed in cavity nests.
Researchers at Institute of Science Tokyo developed a method to detect wind direction using seven strain gauges on a flapping wing and a convolutional neural network model. The system achieved high classification accuracy of 99.5% in detecting wind conditions, opening up new possibilities for improving robotic flight control.
The 'Bird Sonic' device, developed by Okayama University of Science, was installed at three Kansai airports to deter birds from flying over runways. The system uses high-frequency waves to reduce bird strikes and aims for 80-90% control by gradual reduction.
The EPFL researchers built a drone with birdlike legs that can walk, hop, and jump into flight, greatly expanding the potential environments for unmanned aerial vehicles. The design allows it to take off autonomously in previously inaccessible environments.
Research from Washington University in St. Louis found that bird wing shape is a key factor shaping biodiversity patterns on islands worldwide. The study revealed how birds' dispersal abilities influence the number of species found on islands, with low-dispersal birds leading to steep species-area relationships.
A robotic bird model with real pigeon feathers replicates the continuous adjustments made by birds to stabilize their flight. The robot's algorithm enables rudderless flight, a long-sought innovation in aviation that could lead to more fuel-efficient airplanes and improved jet fighter operations.
A new pterosaur species reveals key transitional changes between early and later groups, shedding light on the evolution of these flying reptiles. The complete specimen helps bridge the gap in understanding how they transformed from smaller to larger sizes.
A new international study found that even wind-adapted albatrosses struggle to find food during very stormy weather, highlighting the impact of climate change on these birds.
A 2023 avian flu outbreak in Washington state killed 56% of a large breeding colony of Caspian terns and had significant impacts on the Pacific-coast population. The virus was also transmitted to harbor seals, causing an inflammatory response in their brains.
Researchers found that bats' forelimbs and hindlimbs evolved together due to correlated bone shapes, unlike birds. This suggests that bats may struggle to adapt to new environments. In contrast, bird species show little correlation between wing and leg shapes, enabling them to occupy a wider range of ecological niches.
Researchers at Princeton University developed a new technology inspired by bird feathers, which improves flight performance and prevents stalling. The covert-inspired flaps deploy in response to changes in airflow, offering an inexpensive and lightweight method to increase flight performance without complex machinery.
Researchers found that migrating blackbirds do not save energy in warmer climates, but instead reduce their metabolism before departure. The study reveals a previously unknown mechanism used by migrants to save energy prior to migration, and suggests alternative physiological adaptations may offset the energy costs of migration.
New research using satellite technology tracks the movement of albatrosses and petrels, finding that they use sea ice-affected parts of the ocean for feeding and scavenging. The study suggests that Antarctica's shrinking sea ice could force seabirds to travel further or alter their food patterns, affecting ecosystems.
Scientists have discovered that some pterosaurs flew by flapping their wings while others soared like vultures. The new findings were made possible by the discovery of remarkably well-preserved fossils in Jordan, including a species with a five-meter wingspan and unique internal structures.
Researchers found that turkey vultures flying at higher altitudes are generally flying 1m/s faster than those at lower elevations due to reduced drag. By flying faster, these birds can compensate for the lack of lift caused by thin air, allowing them to remain aloft in challenging conditions.
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.
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 a universal equation that approximates the frequency of wingbeats and fin strokes across different animal groups. The equation shows a proportional relationship between body mass, wing area, and wingbeat frequency, revealing a relatively constant pattern across diverse species.
Researchers discovered that hummingbirds create a 3D map of their body when neurons in the forebrain fire as gusts of air touch their wings and skin, allowing them to sip nectar from flowers with precision. This unique ability is also shared by zebra finches, but with slightly less sensitivity.
A new Cornell University study suggests that smaller bird skeletons evolve more freely due to reduced stress on their bones. This allows for greater variability in wing proportions among small bird species.
A team of mathematicians discovered a previously unknown aerodynamic phenomenon in bird flocking, where small groups benefit from precise interactions, but larger groups are disrupted by dislodging members. This breakthrough has potential applications in transportation and energy efficiency.
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.
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 by researchers at the University of Wyoming and Max Planck Institute of Animal Behavior found that migrating animals refine their behavior with age, suggesting experiential learning plays a crucial role in successful migration. As young birds explore new places during migration, they gradually adopt more direct routes, resultin...
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.
The new center will image birds of prey in flight to create 3D models of wing shapes, informing aircraft design for drones and other UAS. Researchers aim to unlock maneuverability in delivery, firefighting, and surveillance applications.
Researchers found an adaptive increase in cerebellum size in fossil vertebrates, enabling powered flight. The study combined PET scans with fossil data, revealing increased brain activity in the cerebellum and optic flow pathways during flight.
A team of scientists proposes the 'flush-pursue hypothesis', suggesting that small dinosaurs with proto-wings used a similar strategy to birds, displaying contrasting plumage on wings and tails to trigger prey escapes. This idea is rooted in field-ornithological studies and neurobiological research on birds.
Researchers found that hummingbirds use two distinct strategies to control their flight: an internal forward model for speed and direct visual feedback for altitude changes. This study's findings can inform the programming of autonomous flying vehicles.
Researchers found that captive-bred Egyptian vultures improved their flight skills faster than those raised in the wild. The study suggests that early life experiences have a lasting impact on animals' ability to cope with challenging periods like migration.
Scientists used stable hydrogen isotope data from 871 dead birds at California wind and solar facilities to understand the geographic origin of affected birds. The study found that most birds killed at solar facilities were nonlocal and varied among species, with local birds making up nearly half of those killed at wind facilities.
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.
A study found that artificial light is a top indicator of where birds will land, leading to ecological traps and collisions. Urban parks can provide decent stopover sites, but competition over limited resources poses a significant risk to migrating birds.
Researchers discovered that hummingbirds use two distinct methods to navigate narrow gaps: sideways movement and 'beak-first' flying. By employing these tactics, they can pass through openings as small as half a wingspan wide, showcasing their remarkable agility.
Researchers discovered two new strategies used by hummingbirds to transit small gaps, including a sideways scooch and tuck-and-glide technique. These adaptations enable the birds to maneuver through dense environments with improved accuracy and control.
Researchers tracked Bewick's swans using GPS data and found that the birds' wintering areas shift northeast as temperatures rise. The swans' migration patterns are influenced by temperature and wind, with warmer winters allowing them to hibernate further north.
A Texas A&M research team found that a population of endangered red-crowned parrots is thriving in urban areas, with four main roosts in the Rio Grande Valley. The parrots' adaptability to human environments and lack of competition for food sources make them an unusual example of a species doing well in urban areas.
Researchers in Sweden and the Netherlands have found that migratory birds can synchronize with food resources by flying a shorter distance, resulting in better breeding success. By giving these birds a helping hand, they may be able to maintain robust populations of small birds despite earlier springs.
Researchers found that birds allowed people to get much closer than expected, with an average distance of just 39 inches, suggesting a significant decrease in fear response. The study's findings challenge existing theories on bird behavior and may offer hope for North American bird populations threatened by human disturbances.
The fossil discovery provides the earliest known evidence of birds consuming leafy greens from flowering plants. Analysis of microscopic residues in a 120-million-year-old bird skeleton reveals that Jeholornis was an herbivore, not a predator.
Researchers discovered that the early avian bauplan was shaped by natural selection driven by powered flight, with forelimb evolution constrained to basic 'blueprint' needed for flight. The study found avialan-like limb proportions established earlier in forelimbs than hindlimbs in theropod history.
Research on white-throated sparrows reveals that the cluster N brain region is activated at night when motivated to migrate and goes dormant during rest periods. This study expands understanding of how animals use the Earth's magnetic field for navigation, shedding light on the impact of human activities on bird migration.
Researchers at Lund University found that migratory bats' efficiency in converting energy into muscle power increases with flight speed. The study, published in Proceedings of the Royal Society B, used high-speed cameras and laser measurements to compare kinetic energy with metabolism.