Articles tagged with Birds
A bio-inspired robotic bird is helping researchers unravel the mysteries behind kestrels' exceptional hovering capabilities. By mimicking key movements, the team discovered unique techniques that could improve manoeuvrability of small aircraft and enhance their ability to cope with turbulence.
A study by University of California, Davis researchers found that red-tailed hawks adjust their wing and tail movements to compensate for missing feathers during molt. The findings could inform wildlife rehabilitation efforts and inspire more resilient UAVs.
A new study found that Pygmy Falcons require less than 1 km² to raise their young, contrary to long-held assumptions. The birds operate within a small breeding home range and coexist with Sociable Weavers in communal nests. This research provides a crucial baseline for understanding the spatial requirements of small raptors.
A new study reveals that species with larger brains produce fewer but larger offspring, leading to the evolution of larger eggs. The research analyzed data from mammals, birds, and reptiles, suggesting that brain evolution drove changes in reproduction across dinosaurs and birds.
A new study by University of Michigan researchers found that smaller tree swallows reproduce less due to declining insect populations. The decline in insects affects the timing of breeding and reproduction, leading to a phenological mismatch, which has significant consequences for bird biology.
Research reveals that leaving deadwood in forests and creating artificial gaps can increase the diversity of bats and birds, with some species responding strongly to these changes. The study found that forest interventions can promote biodiversity even in previously monotonous ecosystems.
The American Ornithological Society has recognized Daniel Cadena and Kimberly Rosvall as the 2026 William Brewster Memorial Award recipients for outstanding contributions to ornithological science. The awards are given in recognition of their research on birds, conservation efforts, and service to the AOS.
A new study suggests that environmental factors can influence which bird songs are passed down through generations. Common song types, with higher frequencies and broader frequency bandwidths, traveled more effectively through the environment than rare songs. This makes it easier for young birds to hear and learn these songs, potential...
A study by Royal Netherlands Institute for Sea Research found that Lesser Black-backed Gulls rarely visit wind farms off the Zeeland coast, except for some male birds. Despite being attracted to fishing boats outside the wind farm, the gulls' behavior suggests they avoid entering the wind farm due to unknown reasons.
Researchers found that rewetted peatland solar parks in Northern Germany support threatened bird species and exhibit an unusual mix of species, providing a unique habitat for biodiversity. The study suggests that this novel land use can be a valuable tool for reducing greenhouse gas emissions and restoring peatland ecosystems.
Research found a 27% decline in wading bird populations in the NYC Harbor over 22 years. The Black-crowned Night Heron population declined by 55%, threatening its status as an environmental indicator species.
Urban male bowerbirds collect more colorful and larger human-made items than rural rivals, suggesting a preference for these traits in females. Researchers found that red decorations are more vivid in urban areas, while green decorations are duller.
The new species Plumadraco bankoorum boasts the proportionally longest and best-preserved rachis-dominated feathers found to date. These feathers were likely used for displays, featuring flexible motions similar to modern bird displays.
A new fossil species, Plumadraco, has been found with the longest tail feathers ever recorded on a fossil bird. The analysis suggests that the bird's tail feathers were used for attracting mates, and the color of the feathers was probably dark brown or black.
The study reveals a new species of bird, Plumadraco bankoorum, with exceptionally long tail feathers, estimated to be twice its body length. The findings suggest that males used these feathers in courtship displays, such as up-and-down bobbing or raised postures to show off their plumage.
Researchers analyzed the feather coloration of 28 museum specimens using a full-spectrum camera and visual modeling. The study found that crows lack UV-reflective patches but display subtle changes in hue that indicate age, particularly after the age of 3.
A global meta-analysis of animal behavior found that urban populations exhibit heightened boldness, aggression, exploration, and activity compared to rural counterparts. The findings highlight the need for urban planners to consider animal behavior in urban development.
The American Ornithological Society recognizes Devon DeRaad and Fengyi Guo for their outstanding work in ornithology, while Olivia M. Smith receives the Ned K. Johnson Award. The award winners will present their research at the AOS annual meeting in Amherst, Massachusetts.
Researchers have captured the behavior of scissor-tailed nightjars creating a unique sound by snapping their wrists together during courtship and copulation. The study sheds light on lesser-known bird communication methods and raises questions about the nuances of mechanical sounds.
Researchers pinpoint a specific connection in the brain where song learning first occurs, finding that it hinges on a highly organized process involving a single type of synapse. The study sheds light on how songbirds learn to vocalize by imitating a tutor and shares similarities with human language development.
A new study by Sage Madden reveals that barn swallow chicks' growth is stunted by cold spells within five days of hatching, smallest sibling status, and less food provided by parents. The research, published in PLOS One, provides insight into climate change's impact on chick development.
A high school teacher participated in a citizen science project to record migration data for Black Skimmers in the Eastern US. The study documents the farthest dispersal for breeding among this species, providing valuable insights into its movements.
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 long-term study reveals how the red-necked nightjar's annual cycle follows the moon's light, influencing feeding, migration, and breeding patterns. The research highlights the vulnerability of nocturnal animals to changes in light levels, with potential consequences for conservation.
Researchers found that urban birds flee sooner when approached by women compared to men in a European study. The study involved over 2,700 observations across five countries and 37 bird species, revealing that birds can recognize the sex of approaching humans.
The thrush nightingale migrates up to 18,000 km with four-to-five consecutive nighttime flights and daytime breaks to avoid intense heat, conserving energy along the way. Advanced sensors track this extreme behaviour, providing insight into the bird's strategy for survival.
Researchers found that black grouse can't see dark shades of red and have limited visual contrast, making certain colors ineffective at warning them away from fatal cables. To mitigate this risk, they recommend using large, strongly contrasting markers to provide enough time for the birds to react.
The American Ornithological Society has awarded grants to six early-career researchers from Latin America and the Caribbean to study bird conservation in the region. The projects focus on endemic species and will contribute to broader efforts across the region, strengthening conservation capacity.
A study of 113 baby barn swallows in Colorado found that temperature extremes and variability negatively impact the youngest, smallest, and most neglected nestlings. The research suggests that developmental constraints play a crucial role in determining the effects of temperature on nestling growth.
A new study provides the first direct evidence of cuckoo egg-laying behaviour in cavity nests, rejecting a centuries-old myth about egg-carrying. Cuckoos use two distinct strategies to parasitize host nests, involving trade-offs between accuracy and risk.
A study shows how a kea parrot with a missing upper beak uses innovative fighting techniques to dominate his group and gain social status. He achieves this through 'beak jousting,' which proves more effective than other methods, leading to improved health benefits and social recognition.
A new study reveals that birds in Hawaiian forests engage in kleptoparasitism, stealing materials from neighboring nests. The behavior, common among the scarlet I'iwi and crimson Apapane, could threaten species already under stress due to habitat loss and climate change.
Researchers found that birds that put more energy into raising their young live shorter lives. After selective breeding, females who produced larger eggs aged faster and died about 20% younger than those that laid smaller eggs.
A new study reveals that sunbirds employ tongue suction to slurp nectar, a novel mechanism in vertebrates. This finding highlights the power of convergent evolution, where different species adapt to similar ecological challenges in distinct ways.
A new study reveals that risk-prone animals tend to stay near human activity, while more cautious individuals avoid humans and survive longer. This finding highlights the importance of individual behavior in adapting to human-driven environmental change.
Adélie penguins have been found to consume shelled pteropods as an opportunistic prey, highlighting a previously underdocumented trophic relationship in the Southern Ocean. The study provides valuable insights into the penguins' foraging behavior and its potential implications for the ecosystem.
A study of 50 datasets from over 1,000 individual parcels of tropical and subtropical forest found that avian species richness declines when habitat patches are surrounded by inhospitable areas. In contrast, modest tree cover in the surrounding landscape significantly increases the conservation value of small forest fragments.
A new study warns of a 20-year window to act on climate and land use policies to prevent further biodiversity loss in Britain. Sustainable practices like strong emissions action and reduced meat consumption could save up to 69 fewer species from extinction.
Parties to the Convention on Migratory Species agree to list 40 additional species on Appendices I and II, including iconic species like cheetahs, hyenas, and great hammerhead sharks. The agreement also includes multi-species conservation plans for key regions like the Amazon.
A team of researchers, led by Felicity Newell, tracked over 8,000 birds in Peru's cloud forests and found that breeding times vary significantly due to changing environmental conditions. The results suggest a more complex response to climate change than previously thought.
The Americas Flyways Atlas charts critical habitats spanning 56 countries, revealing key breeding, stopover, and wintering sites for 89 highly vulnerable migratory bird species. The atlas provides governments with a blueprint to protect these birds from habitat loss, infrastructure, and climate change.
The Global Initiative on the Taking of Migratory Species (GTI) aims to tackle the root causes of illegal and unsustainable taking, safeguarding wildlife and livelihoods. The initiative focuses on improving data, strengthening laws, engaging communities, and raising awareness.
A study by University of California, Berkeley biologists found detectable alcohol in at least one flower of 26 of the 29 species of plants tested. Hummingbirds and other animals consume small doses throughout the day without apparent effects, but may metabolize ethanol like mammals do.
A BGU study uses 'soundscape mapping' to quantify the impact of road noise on bird habitats, revealing massive habitat loss and protected areas under threat. The research suggests integrating noise mitigation technologies into environmental planning to protect biodiversity.
Nations are coming together at the Convention on the Conservation of Migratory Species of Wild Animals (CMS) to address declining population trends and extinction threats among migratory species. The meeting aims to establish conservation policies and protections for over 2,000 species under threat.
A comprehensive study reveals substantial declines in many South African raptor and large terrestrial bird species over the past 16 years. Researchers detected sharp declines in threatened and iconic raptors, including the Endangered Secretarybird, highlighting the vulnerability of species dependent on multiple regions.
A new species of leaf warbler, Tokara Leaf Warbler, has been discovered in Japan through DNA analysis. The species is found only on two island groups and is considered vulnerable due to low genetic diversity and potential population declines.
Researchers in Taiwan studied oviraptor incubation patterns, finding that oviraptors used the sun's warmth to hatch eggs, unlike modern birds. This study sheds light on the evolution of avian-style incubation and reveals that oviraptors may not have been as efficient at hatching eggs as modern birds.
A study by Florida Atlantic University researchers has uncovered the impact of stress on wild songbirds, finding that even mild challenges can alter the gut microbiome, leading to changes in health indicators such as beak color and stress hormone levels.
Researchers studied the Seychelles warbler's gut bacteria, finding that immune genes influence which microbes thrive, and that this relationship affects host health and survival. The study suggests a two-way relationship between immune genes and gut bacteria, with potential benefits for human health and disease prevention.
Research finds extreme cold and rain reduce young bird growth and survival, but earlier breeding can mitigate these effects. In contrast, hot extremes can boost growth by increasing insect activity and visibility.
Researchers found that Gracixalus weii treefrog's call is similar to a bird-like chirp of the Black-Breasted Thrush, highlighting the evolution of acoustic symbols in amphibians influenced by ecological interactions with birds. This phenomenon provides a reliable alternative to morphological or molecular diagnosis for cryptic species
A recent study led by UMass-Amherst biologists found that the 2021 Great Texas Freeze killed up to 27% of purple martins' breeding population, with effects felt for decades. The study also revealed that the affected birds delayed reproduction and hatched fewer chicks, and their population is already declining in Texas and Louisiana.
The interim update to the State of the World's Migratory Species report warns that 49% of migratory species populations are declining, with 24% facing extinction, due to habitat loss and overexploitation. The report highlights the need for coordinated international action to address these threats and protect migratory species.
Scientists have identified five distinct species of antbirds, including two new species, by integrating AI, vocal analysis, and traditional museum work. The study reveals that populations separated by major Amazonian rivers have evolved into distinct species.
Researchers at Duke-NUS Medical School found that testing air and surfaces can detect a broader range of poultry viruses, including highly pathogenic avian influenza strains, which traditional surveillance may miss. Environmental sampling can provide a more comprehensive view of viral circulation in live poultry markets.
Researchers found that jackdaw chicks learned to associate predator sounds with danger when paired with adult alarm calls, becoming more vigilant. However, they did not learn from contact calls or a non-predatory birdcall, suggesting an evolutionary process to ensure only biologically meaningful links are learned.
Researchers found that agriculture intensity is the main driver of accelerated bird decline in three regions. The study analyzed data from the North American Breeding Bird Survey and estimated a 15% total loss of bird abundance across North America over 35 years.