Articles tagged with Birds
Researchers tracked juvenile cowbirds using automated telemetry systems, finding they leave host nests at dusk and spend nights in nearby fields before returning just after daybreak. This behavior helps young birds avoid imprinting on their host parents and learn essential survival skills.
Climate shifts may drive up temperatures in Hawaii, allowing mosquitos into high elevation habitats where native vegetation persists. 20 Hawaiian forest bird species risk losing more than 50% of their range under climate change scenarios.
Researchers discovered that Siberian jays can identify fine-scale differences in kinship to other individuals, even those who are unfamiliar before settling into a group. This ability is linked to their cooperative behavior, particularly when sharing food at carcasses of large herbivores.
A large dataset of bird sightings across Europe shows that some species benefit from warmer winters and more productive spring times, while others decline due to changing conditions. The study suggests that climate change will favor some species over others, with the most vulnerable being those adapted to colder regions.
Researchers at Florida State University have created the first complete bird family tree, showing that all land birds diverged from a group of dinosaurs. The study reveals unexpected relationships between different bird species, including the connection between hummingbirds and nightjars.
A new study of a 125-million-year-old bird fossil from central Spain reveals intricate wing structures that match those of modern birds, supporting the idea that early birds could fly efficiently. The discovery provides key insights into the evolution of avian flight and sheds light on the capabilities of ancient birds.
Scientists have developed finches with a genetic mutation linked to Huntington's disease, enabling them to study the disorder's effects on speech. The transgenic birds display behavior disorders associated with the condition, providing valuable insights into its neurological basis.
A study by UC Davis researchers found that bird diversity in the Central Valley's riparian areas is similar between summer and winter, with genetic diversity even higher in winter. Neotemperate migrants from Canada fill the gap during winter months.
A study found that male lizards' bright colors signal attraction to females but increase risk of being attacked by birds. Despite this, 83% of male lizard models survived over five days due to color adaptations.
Researchers found that birds' feeding preferences, rather than social position, are key factors in contracting and spreading a common eye disease. The study suggests targeting high-risk individuals to reduce disease transmission.
Research by Vladimir Dinets and Mark Hauber found that two invasive Eurasian cuckoo species are on the verge of invading North America, posing a threat to native bird populations. The cuckoos' sophisticated parasitic behavior, including egg mimicry, may evade defenses developed by Native American birds against cowbirds.
A new study by Malika Ihle and colleagues found that zebra finches choose mates based on stimulation, leading to increased reproductive success. The research suggests that this mate-choice process is essential for the survival of the species, as it maximizes gene perpetuation through successful offspring.
Ghana's Upper Guinea rain forests have seen a decline of over 50% in understory bird species due to increased illegal logging, which has more than doubled between 1995 and 2010
A study in the Chocó-Andes of Colombia found that intensive farming practices lead to a loss of more than 650 million years of evolutionary history in bird species. Land-sparing approaches, which protect larger blocks of natural habitat, are recommended as a more effective way to preserve biodiversity.
A recent study published in PLOS ONE found that nearly 600 surveyed bird species in North America may lose more than half of their geographic range by the end of the century due to climate change. The researchers used correlative distribution modeling to assess potential range shifts under three different climate scenarios.
Researchers discovered that nocturnal moths rely on turbulent fluctuations in the airstream to determine wind direction, whereas songbirds do not. This ability helps them cope with wind when traveling at high altitudes and allows for more accurate navigation.
Research by UNH scientists finds that appearance alone is not enough to identify hybrid zone birds; DNA analysis reveals complex combinations of plumage traits. The study provides insights into the challenges of monitoring hybrids in natural populations and aids in conservation initiatives for both species.
Research suggests tropical songbirds invest more resources in their offspring, leading to higher survival rates, whereas temperate species prioritize quantity over quality due to high mortality rates among young adults.
Research reveals differences in growth rates, parental care, and survival rates among tropical and temperate songbirds. Tropical birds tend to grow faster and have higher parental investment per offspring, leading to improved survival rates outside the nest.
A study describes general structure of scavenger communities worldwide, revealing that birds dominate consumption with 65.8% frequency, while mammals and large predators also play key roles in structuring these communities. The findings highlight the global impact of human activities on biodiversity and ecosystem functioning.
Researchers have discovered a neurological mechanism that explains how songbirds refine and alter their songs as adults, shedding light on the human brain's learning complex motor skills. The finding may have long-term implications for treating neurological conditions.
Climate change is affecting UK's blanket bogs, impacting rare upland bird species like dunlin, golden plover, and red grouse. The loss of crane fly prey due to summer droughts could lead to a 50% decline in dunlin numbers, 30% in golden plover, and 15% in red grouse by 2051-80.
Researchers found that mowing down cattails and phragmites in stormwater basins leads to a boom in mosquito populations and an increased risk of West Nile virus transmission. Mowing also disperses bird species, which are natural reservoir hosts for the virus, contrary to initial expectations.
A recent study published in Science Advances found that temperature changes are the primary environmental influence on bird species distribution in Mexico. The researchers analyzed historical data and current distributions of 115 bird species to find that only temperature change had significant impacts on avifaunal turnover.
A new study published in Nature Climate Change suggests that climate change will not lead to widespread interbreeding among closely related species. Only about 6 percent of species with non-overlapping ranges are likely to come into contact by the end of this century.
A study by the University of Exeter found a 35% decline in bird species in agricultural habitats compared to natural areas. The researchers recommend incorporating patches of natural vegetation into agricultural landscapes to maintain biodiversity.
A $1.35 million grant will fund research on predicting deadly avian flu outbreaks by understanding the influenza virus's transmission from birds to humans. The team, led by Lukas Tamm of the University of Virginia School of Medicine, aims to develop a new tool for predicting outbreak risk based on viral envelope changes.
Researchers discovered that chestnut-crowned babbler birds can rearrange meaningless sounds to create new meanings, similar to human language formation. This finding suggests a potential early step in the evolution of complex language systems.
A new study has deciphered the sounds of chestnut-crowned babbler birds to reveal a key element of human language, where rearranging meaningless sounds creates meaningful signals. This finding suggests that the ability to generate new meaning may have evolved early in the emergence of complex communication systems.
Researchers found that songbirds rely on patterns in much the same way as people do when learning to recognize and categorize speech sounds. By training starlings to differentiate between complex auditory patterns, the study showed that birds can learn to categorize motifs into meaningful categories.
A new study by the U.S. Geological Survey and Florida Atlantic University reveals that past water conditions and availability are crucial factors affecting wading bird populations in the Everglades. The research found a 'lag effect' where wet conditions can take several years to impact bird numbers.
A study led by Duke University researchers found that parrots have distinct brain regions, called 'shells,' that are involved in vocal learning and may contribute to their ability to imitate human speech. The study also suggests that the shells may be responsible for the species' exceptional vocal mimicry abilities.
A study found that a single gene mutation causes the distinctive head crest in pigeons and domesticated ringneck doves, with similar mutations occurring in both species.
Researchers have pushed back the time period of sophisticated Pueblo culture by at least 150 years, suggesting a more complex society with relationships to Mesoamerican cultures. The discovery of scarlet macaw remains in ancient settlements has provided early evidence of social hierarchy and trade networks.
African songbirds use color and pattern traits to recognize forgery eggs from cuckoos, but the system is not foolproof. Researchers found that heavily parasitized birds create unique egg patterns by combining individual traits, which may have security implications.
A study by Zoological Society of London reveals that bachelor males in small, threatened populations can maintain genetic diversity and reduce inbreeding. These 'floaters' have a significant impact on population size and sex ratio, helping to increase breeding birds and influence the survival of the species.
A recent study published in Conservation Biology makes a strong case for using detailed wildlife density data to inform conservation planning. The research found that prioritizing areas with higher species richness led to the protection of more individuals of each species.
Researchers found that hierarchical social structures, where individuals follow a single leader with rapid information passing down the 'chain of command', enable pigeon flocks to navigate accurately. This allows for better decision-making even when individual birds make navigation errors.
The Merlin Bird Photo ID system can identify 400 bird species in the US and Canada with accuracy of 90% and is designed to improve with user input. The system combines AI techniques with millions of data points from humans to present the most likely species, including photos and sounds.
Etienne Benson's research explores the impact of birds on the power grid in 1920s California, revealing how avian waste caused short circuits. The study highlights the importance of considering non-human actors in infrastructure systems and the need for 'insulation' and 'interconnection' strategies to mitigate nature's effects.
A study published in Scientific Reports reveals that birds like magpies utilize a tiny vortex formed at the alula feathers tip to improve flight maneuverability. The researchers observed this phenomenon through wind tunnel experiments, demonstrating how the vortex helps air flow attach to the wing surface.
A study published in Functional Ecology found that late-rising songbirds are more susceptible to being cuckolded, meaning they raise offspring fathered by other males. This suggests a potential role for sexual selection in shaping circadian traits in wild vertebrates.
Researchers combined local bird survey data from 16 point counts in Northeast and Midwest forests, revealing significant declines in populations of four ecological indicator species. The study highlights the need for more formal monitoring in rare habitats and suggests that some species may be increasing in certain regions.
Researchers discovered that Mexican Jays can 'weigh' peanuts by shaking them in their beaks, producing sounds that help identify the content. The birds prefer heavier nuts with more content over lighter ones, even when they appear identical.
Researchers found that male Java sparrows synchronize their bill-clicking sounds with the melody of their song, similar to human percussionists. This behavior suggests that birds may have an innate ability to produce and coordinate non-vocal sounds with vocalizations.
The accumulation of perfluoroalkyl substances in Canadian birds' eggs is a complex issue with varying trends among species. Some toxins are decreasing due to manufacturing phase-outs, while others continue to rise in the oceanic environment.
A University of Montana study found that songbird species vary in time devoted to warming eggs due to factors such as lifespan and predation risk. Longer-lived species with more future breeding opportunities invest less effort in keeping eggs warm, while those with shorter lives put more effort into caring for their young.
Scientists at UC San Diego have created thin films of material that produce a wide range of pure colors, from red to green, by arranging synthetic melanin nanoparticles. The colors are determined by the physical structure rather than pigments.
Researchers found a teeter-tottering climate pattern behind boreal bird irruptions, driven by boom-and-bust cycles in forest seed production. Persistent shifts in rainfall and temperature drive mass migrations of pine siskins and other species.
A new bird species, the Sichuan bush warbler, has been discovered in central China by an international team of scientists. The bird is characterized by its distinctive low-pitched drawn-out buzz and shorter click song, and can be found in dense brush and tea plantations at lower elevations.
Researchers found that bold field crickets suffer from higher mortality rates compared to shy individuals, likely due to increased predation. This study, published in Behavioral Ecology, highlights the importance of considering individual personality traits when studying animal survival and ecology.
Researchers discovered that birds with complex courtship displays have muscles sensitive to testosterone, enabling them to perform impressive acrobatics. This groundbreaking study sheds light on how hormones control social behavior in birds, paving the way for further research into the evolution of bird brawn.
The documentary follows University of Miami researcher J. Albert C. Uy as he investigates a genetic mutation causing two bird populations to split into separate species. Uy's research aims to unlock secrets of speciation and the planet's animal diversity.
A new study found that 79% of southeast African birds were infected with haemosporidian parasites, including novel malaria parasite lineages. The study's findings indicate that lifestyle characteristics of birds can influence their association with different parasite genera.
A new species of terror bird, Llallawavis scagliai, has been discovered with exceptionally preserved fossils revealing details about its anatomy and sensory capabilities. The study provides insights into the evolution, behavior, and ecology of this group of fossil birds.
Residents in both cities value bird enjoyment more than most, spending over average on bird food and supporting activities. This has a positive impact on local economies as residents invest in bird-friendly structures.
A US Forest Service-led study found that 195 out of 201 bird and mammal species in northwest Alaska could face habitat loss or gain due to climate change. The research projects up to 52% of species may experience habitat expansion, while 45% will see contractions.
Researchers analyzed mouse songs using a new statistical tool, finding that males sing more complex songs when they smell a female's urine but don't see her. The songs' dynamics are influenced by social contexts and can be used to study vocal communication and disorders, including autism spectrum disorder.
Researchers tracked tiny birds with tracking backpacks and found they flew directly over the Atlantic Ocean to reach their wintering grounds in South America. The birds took 2-3 days to complete the journey, storing up fat reserves to fuel their flight.
Researchers tracked tiny geolocators on blackpoll warbler birds to confirm their non-stop migration over the Atlantic Ocean. The journey, spanning up to 2,770 kilometers, is one of the longest recorded for a songbird.