Articles tagged with Bird Migration
Wind speeds on migration predicted annual survival, male arrival date, female egg laying, and productivity of yellow warblers. Higher westerly wind speeds associated with lower apparent annual survival due to increased in-flight mortality risk.
Research found that adult sea turtles' migration patterns and feeding site selections are based on their past experiences drifting with ocean currents as juveniles. This suggests that turtles imprint on suitable locations during their juvenile development phase, influencing their adult migrations.
A team of researchers from the University of Akron has made a groundbreaking discovery by identifying the missing hormone leptin in birds. Leptin plays a crucial role in regulating body fat storage, metabolism, and appetite, but its presence was unknown in avian species until now.
Researchers from SISSA and ICTP developed a model simulating collective behavior of groups, finding the number of informed individuals, sociality, and decision strength as critical variables. The study suggests that even minimal fluctuations in these variables can lead to catastrophic changes.
Research at UEA found that individual birds arrive at the same time each year, but overall arrival dates are advancing due to climate-driven changes in bird hatching and nesting. This advance is linked to the aging of the bird population, with younger birds migrating earlier as a result.
Bielefeld biologists have confirmed a genetic clock influences when young buzzards leave their parents' territory. The study, published in Molecular Ecology, found that four genes determine the timing of dispersal and plumage morph in sedentary birds.
Researchers found that Audubon's warblers share mitochondrial DNA with myrtle warblers, a different species that migrates annually. The study suggests that the songbird may have co-opted the myrtle's mitochondria to better power its travels.
A University of Maryland-led research team found that young whooping cranes learn their migration route from older birds and get better at it with age. The study shows that individual birds' ability to stick to the route increases steadily each year up to about age 5, and remains roughly constant from that point on.
A York University study found that songbirds migrating between the Amazon and North America do not adjust their departure times in response to record-breaking spring temperatures. This could lead to missed peak food supplies, impacting breeding productivity.
Researchers used 'ethoinformatics' to analyze three years of migration data from miniature tracking devices attached to Manx Shearwater seabirds, revealing complex patterns of rest, flight, and foraging during migration. The study found that birds spent less time foraging in winter and more at rest in the southern hemisphere.
A team of researchers tracked the migration patterns of the Asian subspecies of great bustards, which travel over 2,000 miles between their breeding grounds in Mongolia and wintering grounds in China. The study highlights the challenges faced by conservationists, including poaching, habitat destruction, and climate change.
Scientists study snow bunting populations in North America, revealing east-west migratory divide and mixed-data approach for tracking connectivity. The research supports the need for a versatile mix of data to assess habitat changes and climate change effects on breeding success.
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.
Researchers found a significant increase in migratory duck species in the region's reservoirs, which are linked to rice cultivation. The study suggests that these manmade wetlands play a crucial role in supporting bird populations during winter, providing a safe haven for ducks fleeing from declining natural habitats.
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.
A new study reveals that migratory insects, such as the Silver Y moth, can survive and thrive in Northern Europe during the summer, thanks to abundant food supplies. This discovery challenges previous assumptions about insect migration and highlights the importance of monitoring these species for pest control and ecosystem balance.
A York University study found that songbirds follow a strict annual schedule when migrating to their breeding grounds. The research tracked the migration routes and timing of individual birds over multiple years, revealing consistent departure times with only three-day differences from year to year.
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.
For the first time, researchers have mapped the exact migration route of Golden-crowned Sparrows from California to their breeding grounds in coastal Alaska. The study, published in PLoS ONE, reveals that these small songbirds travel up to 2400 miles one-way and spend only 29 days on their northbound migration.
Researchers at Harvard Medical School have successfully induced magnetization in yeast cells by manipulating their iron transport system. This breakthrough provides new insights into the mechanisms of magnetization and its potential applications, including bioprocessing, tissue engineering, and therapeutic cell tracking. The study's fi...
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.
A recent study published in PLOS ONE found that climate change is affecting bird migration timing in North America, with species shifting their arrival times by as much as 3-6 days per degree Celsius. The study used citizen science data from amateur birdwatchers to analyze the effects of spring temperature warming on migration patterns.
A new study finds that La Niña conditions in the equatorial Pacific precede four major flu pandemics, including 1918, 1957, 1968 and 2009. The researchers theorize that altered bird migration patterns promote genetic reassortment of the influenza virus.
A University of Guelph study found that male birds that stay behind gain better breeding sites and are more attractive to females, leading to increased mating success. In contrast, migrating birds are often in poorer condition and less likely to survive the heavy rains.
A UC Santa Cruz scientist is tracking bat populations using mobile storm-chasing radars, revealing insights into their behavior and population changes. The emerging field of aeroecology combines ecology, meteorology, and physics to study the interactions between organisms in the lower atmosphere.
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.
Research using satellite telemetry found that migrating birds have a short 'window' of 5-15 days when they can disperse the H5N1 virus over 500km. Asymptomatic infection is crucial, and individual birds must fly quickly and take shortest routes to spread the disease.
Researchers found that migratory birds become less capable of resisting temptation, pecking at food-giving buttons without learning to stop. The study suggests that temporal fragmentation of sleep may play a role in the loss of behavioral inhibition during migration.
Scientists studied ancient bird migration and found that northern birds had the ability to cross the land bridge, while southern species were restricted. The study reveals an uneven species migration pattern, with many New World oscine species breeding in South America despite having northern origins.
Researchers found that even tiny urban woodlots are valuable for Swainson's Thrushes and other migrant landbirds, providing food and protection. The study revealed that birds stayed in these sites for an average of four days, with the duration varying depending on factors such as calendar date, weather, and body mass.
Researchers found that migratory birds have smaller brains than resident birds, contrary to the protective brain theory. The study suggests that migrating reduces energetic and cognitive costs, making brain size an adaptation for survival.
Research on blackcap birds found that strong directional selection for lower migratory activity leads to the evolution of partial migratory populations and finally, to non-migratory birds. This reduction in migration distance saves energy and time, allowing birds to occupy better breeding territories and produce multiple broods.
A University of Georgia study has found that monarch butterflies from long-distance migrating populations have evolved significantly larger and more elongated wings than their stationary cousins. This suggests that traits known to enhance flight ability in other migratory species are favored in these insects.
Researchers found that feeding birds can lead to the evolution of reproductive isolation, resulting in two distinct populations within a single species. This study shows that human activities can influence the evolutionary trajectories of even common bird species.
Researchers found that bat migration evolved independently within the Vespertilionidae family, with most species migrating for better hibernating conditions. The study discovered a correlation between migration and roost use, with tree-roosting bats more likely to migrate.
Researchers tracked the migration of 11 Eleonora's falcons, discovering they cross the Sahara Desert and Equator during day and night. The birds fly over 9,500km from Balearic Islands to Madagascar before returning to Europe via a different route.
Researchers found that slowing turbine blades in low-wind periods significantly reduces bat mortality, as bats are more likely to fly when winds are relatively low. The study demonstrates a successful way to mitigate bat deaths without significantly reducing energy generated from wind farms.
Researchers found that smaller migrating blackcaps lose body temperature at night during stopovers to save energy, while heavier birds drop their metabolic rates less. This helps the birds accumulate more fuel and shorten their refueling stops.
Using DNA barcoding and stable isotope analysis, researchers identified the species of birds involved in the Jan. 15 airline crash into the Hudson River as migratory Canada geese. The findings emphasize the need to understand the role of migration in birdstrikes to develop effective management strategies.
Researchers at the Smithsonian Institution analyzed feather remains from a US Airways plane that crashed into the Hudson River, finding that the Canada geese involved were from a migratory population. The study's findings provide essential information for developing policies and techniques to reduce future bird strikes.
A pilot project led by RIT scientist aims to verify a model using geographic information systems technology to select optimal resting locations. The study focuses on Neotropical migrants and will inform the conservation of migratory bird species.
A study published in the Journal of Biogeography found that climate change may lead to longer bird migrations, with some species facing journeys of up to 250 miles longer. This could have significant consequences for birds' survival and ability to adapt.
Citizen scientists transcribe historical bird records into scientific database for better understanding of climate change effects on bird populations. The USGS North American Bird Phenology Program aims to unravel the impact of global warming on bird behavior and migration patterns.
Researchers tracked songbirds using tiny geolocator backpacks, revealing they can fly up to 500 km per day, exceeding previous estimates of 150 km. Songbirds' spring return times were also found to be two to six times more rapid than in fall migration.
The world's great animal migrations are experiencing steep declines and disappearances due to human activities such as dam construction, overfishing, and habitat destruction. The loss of these migrations not only disrupts the natural balance but also has significant effects on the ecology of surrounding landscapes.
Research at Queen's University reveals that migrating songbirds observe and learn from local birds' 'mob' behavior to avoid predators. By recognizing social cues, they can gain valuable information about predator location and identity.
Researchers analyzed bird migration patterns in eastern Massachusetts and found that 8 out of 32 species are arriving earlier due to warming temperatures. Species that winter in the southern US are generally keeping pace with climate change, while those further south are slow to adapt.
The Acoustics '08 conference in Paris features a range of topics, including a clinical assessment of blood vessel ultrasound and its potential to detect vulnerable plaques. The conference also explores the acoustic properties of Stradivarius violins and their modifications for modern playing styles. Additionally, there will be presenta...
Researchers found that pointed wingtips and reduced weight per wing area reduce flight costs for migratory birds. Climate change may exacerbate this effect, altering bird migration patterns and energy budgets.
Researchers found that the probability of bird migration errors increases with species abundance in Asia, while body size has no effect. The scientists suspect an error in the genetic migratory programme as the cause, rather than weather or other factors.
A recent study reveals a drastic decline in shorebird populations over the past 25 years, with migratory species suffering a 73% drop and resident shorebirds declining by 81%. The loss of wetlands and habitats is a significant contributor to this decline, highlighting the need for improved conservation efforts.
Researchers report that migratory Eurasian reed warblers can correct their travel routes after being flown east and head back to their original destinations. The findings suggest that the birds have true navigation capabilities, including identifying latitude and longitude, contradicting the notion of limited north-south navigation.
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.
University of Washington scientists track six penguins' movements using satellite technology to model energy requirements, understand breeding habits, and assess impact of human activities on their migration route. The project aims to improve conservation efforts for the Magellanic Penguin species.
Researchers at Goethe University Frankfurt discovered that domestic chickens possess a magnetic sense of direction, orienting themselves by the Earth's magnetic field. This ability is thought to have evolved before migration and may be common to all birds.
A study on European blackbirds found that urbanization favors sedentary males, with those exhibiting lower migratory disposition having an earlier onset of reproductive season. This is due to the advantages of sedentariness and earlier territory establishment for males in terms of reproductive success.
Data from decades of bird surveys show a decline in total birds in the region, but some species' populations increase due to habitat changes, while others decrease despite migration or expansion into new habitats.
Researchers reconstructed the H5N1 avian flu virus's history over the past decade, tracing its origins in Guangdong province and spread across Eurasia. The study provides a roadmap for health officials to limit the virus's spread by targeting specific strains and regions.
Researchers found that food scarcity is the primary driver of bird migration, contradicting previous theories. The study also revealed that flock foraging is less likely to lead to migration.
A new study reveals that giant noctule bats feed on songbirds during nocturnal migrations, contradicting earlier suggestions that they only eat insects. The researchers used stable isotopes to track the bats' diet and found a significant presence of songbird flesh in their stomachs during autumn.