Articles tagged with Bird Flight
Researchers tracked the movement of European bee-eaters using tiny radio transmitters and found they both soar and flap their wings, saving energy. The birds use as little energy when soaring as when resting, contrary to previous studies with larger species.
Researchers have modeled and mimicked the natural designs of falling geckoes, gliding snakes, and flying birds to improve air vehicle design. The special edition, 'Bioinspired Flight', reveals innovative approaches for controlled hovering, forward flight, and exploitation of thermal updrafts.
Researchers used a particle model to explain how birds make decisions when landing on foraging flights. The collective switching from flying to landing state overrides individual intentions, heavily influenced by bird position within the flock and perturbations.
A study published in The Journal of Experimental Biology found that flying fish can glide better than insects and as well as birds like petrels. The research revealed that the fish's lift-to-drag ratio increased when gliding near the surface, allowing them to cover longer distances.
Researchers studied the predatory style of Andalgalornis, a mid-sized terror bird that used its uniquely rigid skull and hooked beak to jab like a boxer. The team's simulations showed that the bird's attack-and-retreat strategy was effective in taking down prey, with well-targeted jabs delivering high stress levels.
A new study has revealed that ancient 'terror birds' like Andalgalornis used their powerful beaks and rigid skulls to attack prey with well-targeted jabs. Despite its strong vertical skull, the bird's skull was too weak from side to side, making it vulnerable to catastrophic fracture.
A new study suggests that mosquitoes, particularly Culex tarsalis, played a significant role in spreading West Nile virus across the US. The findings reveal that mosquitoes' flight patterns mimic the actual path of the virus's spread, contradicting previous assumptions that birds were primarily responsible.
A new analysis of a fossil specimen called microraptor suggests that small, feathered species must have been gliders that came down from trees. The research supports the idea that some species believed to be dinosaurs may have descended from birds.
A joint team from the University of Kansas and Northeastern University found that microraptor's four wings allowed for successful gliding. The study suggests that birds evolved flight above the ground, not as a terrestrial adaptation.
Galapagos finches develop antibodies against two parasites that invaded the islands, suggesting they can fight off alien invaders. The immune system recognizes these parasites and produces specific antibodies, which may help the birds resist the threats.
Researchers used a 'neurologger' device to record pigeon brain activity while flying over familiar terrain. The study found that pigeons respond to visual cues with distinct brain patterns, including high-frequency oscillations reflecting memory processing.
Research by Sievert Rohwer and colleagues reveals that maximum body size in birds is constrained by the molt process. As bird size increases, feathers wear out before they can be replaced, requiring alternative strategies to maintain aerodynamic support. This fundamental relationship ultimately limits the size of flying birds.
Researchers at Oregon State University have made a groundbreaking discovery about bird physiology, finding that birds' lung structure and musculature are critical to their flight capacity. This study suggests that birds did not descend from theropod dinosaurs but instead evolved on a parallel path.
Studies show that male hummingbirds with long tails experience only a minimal cost in speed or energy, with a 3.4% drop in maximum flight speed. The researchers argue that the benefits of attracting females outweigh the costs of having long tail feathers.
A new study reveals how pterosaurs used balloon-like air sacs to facilitate sustained activity and enable the evolution of large flying vertebrates. The system reduced bone density, addressing a major challenge in sustaining flight in large-bodied pterosaurs.
Ancient flying reptiles employed all four limbs for take-off, defying conventional wisdom. The study reveals that pterosaurs had stronger front limbs than legs, allowing them to generate massive power without sacrificing size. This discovery sheds new light on the biology and evolution of these fascinating creatures.
Researchers tracked bird flight patterns using radar and found that some birds fly in tandem even when 200 meters apart, suggesting active social behavior.
The discovery of Eoconfuciusornis zhengi provides evidence for the evolution of Confuciusornithidae family and its link to early avian flight. The fossil's unique features, such as increased deltopectoral crest size and keel, indicate a significant adaptation for improved flight capabilities.
A comprehensive survey of 51,000 chickens found that intensive rearing methods lead to leg health problems, affecting over 27.6% of birds at 40 days old. The study highlights the need for alternative management practices to reduce growth rates and improve welfare.
Researchers aim to create flapping-wing aircraft that can hover and perch, like birds and bats, which outperform man-made planes in efficiency. By studying the aerodynamics of natural flyers, engineers hope to develop vehicles capable of performing missions in uncertain environments.
A University of Manchester team discovered that theropod dinosaurs had avian-like air-sac respiratory systems, allowing for efficient oxygen supply. This finding supports the theory that dinosaurs were direct ancestors of birds and had similar characteristics.
Researchers at Princeton University discovered that migrating adult sparrows possess an internal navigational map, enabling them to find their way after being thrown off course by thousands of miles. In contrast, juvenile birds, lacking experience, use only a compass to orient themselves southward and struggle to adjust their flight plan.
Researchers found that the earliest birds primarily made their livings on the ground rather than in trees. By analyzing toe claws of 249 species and fossilized ancestors, they concluded that early birds foraged predominantly on the ground.
Research finds that female bird species develop a sexual preference for males of their own species, driven by genes on the sex chromosome inherited from the father. This discovery sheds light on how new species are formed and may explain the existence of new species despite occasional hybridization.
New evidence from a tiny Mongolian dinosaur suggests that small size evolved before flight in dinosaurs, forcing paleontologists to re-examine their assumptions about the evolution of birds. The study found that some dinosaur lineages actually increased in size over time, contradicting previous theories.
Researchers found that birds acquire flying skills due to genetically specified latent memory left behind by their ancestors, decreasing learning required. This effect is more pronounced when there is a large fitness cost associated with learning.
A new theory proposes that learning skills, such as flying, accelerates the evolution of innate abilities in birds by creating a latent memory that reduces the need for future generations to learn. This is achieved through the use of distributed representations in neural networks, which allows for faster evolution of adaptive behaviors.
A study analyzing 138 bird species reveals that maximum flight speed is not solely determined by aerodynamic scaling rules. The authors found that flight speed also reflects the evolutionary history of the species, with species from the same group tending to fly at similar speeds.
Researchers found that bat flight is distinct from bird flight, particularly at small scales, due to its collapsible membrane and twisting wing path, generating different wakes and lift during the upstroke.
Researchers from UC Berkeley and Texas A&M University deploy high-resolution intelligent robotic video system to locate the ivory-billed woodpecker, a species considered extinct for decades. The system provides detailed video sequences of other birds, suggesting a new approach to field biology work.
Researchers have made the first measurements of bat wake fields, revealing a novel lift-generating mechanism. Bat wings are highly articulated and flexible, allowing for greater maneuverability than birds and insects. The findings could lead to the development of more efficient tiny flying machines.
Researchers found that a single ligament in birds' shoulders stabilizes their wings during flight, making it a linchpin for modern bird flight. However, this ligament-based system evolved gradually over time, suggesting early birds may have flown differently.
Researchers have developed an 'audio telescope' system that uses microphone arrays to locate and identify birds by their unique calls. The system can distinguish between different species within seconds, improving airport safety and reducing costly collisions.
A team of Princeton University researchers tracked 14 green darner dragonflies for up to 10 days and found their flight patterns showed similarities to bird migration patterns. The study suggests that the rules for animal migration may have been established in Earth's history, with implications for agriculture and ecological management.
Researchers found that juvenile birds, like chukar partridges, use a form of locomotion called 'wing-assisted incline running' (WAIR) to climb steep slopes. This behavior may have been crucial for the evolution of flight in birds, as it would have provided an advantage when pursuing prey or escaping predators.
Using bird-mounted cameras, researchers can measure key aspects of a bird's flight with unprecedented accuracy. By analyzing the motion data from these onboard systems, scientists hope to gain insights into the intricate mechanics behind a bird's flight, including its control system and body motion.
African stonechats exhibit spontaneous nocturnal activity echoing that of European stonechats, indicating the presence of Zugunruhe. The researchers propose that this migratory program may be a common avian feature, allowing birds to adapt to environmental changes.
The discovery of Buitreraptor gonzalezorum, a 90-million-year-old dinosaur, reveals that dromaeosaurs originated during the Jurassic period, challenging previous estimates. The fossil's bird-like features and unique characteristics provide evidence of a global distribution and evolutionary routes for these carnivorous theropods.
Recent discoveries in China have led to new questions about the claim of direct derivation between birds and theropod dinosaurs. Researchers found no evidence for protofeathers on dinosaurs and suggest decomposition patterns may be mistaken for feathers.
University of Florida engineers create drones with morphing gull-wing designs to enhance stability and agility in tight city spaces. The innovative technology allows planes to perform sharp turns, spins, and dives, and even land in confined areas, increasing their utility for military operations.
Researchers from Oregon State University and colleagues used digital particle imaging velocimetry to analyze the wing movement of hummingbirds. The study found that hummingbirds support 75% of their weight during the down stroke and 25% on the up stroke, unlike insects which produce equal amounts of lift during both strokes.
Researchers used digital particle imaging velocimetry to document the movement of air around a hummingbird's wings, revealing that it develops only 25% of its weight support during the upstroke. This unique wing structure enables hummingbirds to tap into 'leading edge vortices' and gain hovering ability.
Researchers found a unique brain cluster called Cluster N that is active at night but dormant during the day, indicating a specialized night-vision system. This adaptation enables birds to navigate and fly during their nocturnal migrations.
Independent sightings of the ivory-billed woodpecker have been reported in eastern Arkansas, with video evidence suggesting that the bird may still exist. The birds were spotted in the region's swamps and hardwood forests, where conditions are becoming increasingly favorable for population growth.
Researchers have discovered a new mechanism by which migratory songbirds sense geomagnetic fields and orient their flight. Head-scanning behavior is used by birds to detect the direction of the Earth's magnetic field, allowing them to navigate during yearly journeys covering thousands of kilometers.
Researchers found Archeopteryx had a brain three times larger than crocodiles and similar to modern birds, supporting the theory of evolution. The study disproves the idea that some dinosaurs couldn't fly due to feathers.
Pigeons with homing experience were significantly attracted to highways and a railway track, especially during early and middle sections of their homeward journeys. The researchers found that the birds may use cognitive strategies to locate their loft by relying on topographical points and road features.
Research by Scott McWilliams at the University of Rhode Island shows that birds' digestive systems adapt to meet changing energy demands during migration. Birds need sufficient protein to build their digestive tract, which can impact habitat management at key stop-over sites.
A new theory describes a fundamental pattern that unifies various ecological relationships, providing insight into species abundance and biodiversity. The theory also suggests a predictable relationship between the sizes of rock pieces and species populations.
Researchers found that cockatiels and turtledoves generate more power in linear flight than magpies, attributed to their tail and wing structure. The study provides insight into how muscles are used to produce power for flight at different speeds.
A new theory proposes that modern birds' evolution of flight was driven by their parenting skills, which led them to settle in trees for better protection. This contradicts two leading theories on avian flight and is supported by evidence from Archaeopteryx fossils.
A study by Oklahoma State University researchers found that changes in the American Great Plains have affected birds, with some species benefiting from woody habitat and others declining due to habitat loss. Management options such as prescribed fire and grazing animals may help mitigate these impacts.
A team of researchers has discovered a new species of early bird, Apsaravis ukhaana, in Mongolia, which sheds light on the evolution of modern birds. The fossil, dated to 80 million years ago, reveals that early modern birds were not restricted to near-shore environments and were instead small terrestrial flyers.
A nearly complete bird fossil found in Mongolia provides insight into the origin of living birds and the evolution of flight. The Apsaravis ukhaana specimen is from a part of the evolutionary tree close to the origin of all living birds, shedding new light on their evolution.
A new study evaluates the efficacy of using shade-grown coffee as a bird conservation measure. Researchers found that while shade coffee habitats support many birds, some sensitive forest species still need forests to survive. Protecting canopy shade trees in these plantations is crucial for conservation.
A study published in Nature found that hummingbirds, parrots, and songbirds have evolved similar brain structures to learn and mimic songs. The discovery sheds light on the evolution of language in humans and raises questions about whether birds developed this ability independently or from a common ancestor.
Researchers found similarities in bone structure among coelurosaurs, suggesting birds evolved from a group of dinosaurs. The study also sheds light on the debate over dinosaur metabolic rates, finding irregular collagen fiber bundles similar to those in modern birds.
A study warns that captive California condor releases will fail unless changes are made to reduce human contact and lead poisoning. Repeated instances of tameness issues and lead poisoning have resulted in bird deaths, highlighting the need for alternative methods.
Fossil evidence suggests that reptiles existed before dinosaurs and sported feathers, challenging the theory of bird evolution from dinosaurs. The discovery of 'Longisquama' features key clues indicating that its appendages were indeed feathers.
Scientists have found fossils of an ancient, feathered animal that lived 220 million years ago, which may be the ancestor of birds. The discovery challenges widely accepted theories about the evolutionary link between dinosaurs and birds.