Researchers from Chapman University discover that non-reproductive birds' brains mimic changes in female mice post-partum when induced to become parents. This finding opens new avenues for understanding the regulation of parental care across vertebrates.
Researchers discovered that storks are attracted to the smell of freshly cut grass, using their sense of smell to locate food sources. This finding suggests that the sense of smell may play a greater role in other birds than previously thought, contradicting previous assumptions about bird behavior.
Ecologists from HKU have developed a novel forensic tool using stable isotope techniques to determine whether birds in the pet trade are captive or wild-caught. The tool uses carbon and nitrogen values to analyze amino acid isotopes, distinguishing between diets of captive and wild birds.
Researchers found that wildfire smoke affects the ability to observe more than a third of common bird species in Washington state. Higher concentrations of fine particulate matter, or PM2.5, were associated with harder-to-observe bird species, while some species became easier to detect when smoke was present.
A 120-million-year-old fossil of a tiny bird found in China shares structural and functional features with the massive Tyrannosaurus rex. The discovery sheds light on the evolution of birds from dinosaurian ancestors.
Research shows that migratory birds disperse seeds to warmer latitudes, which can be counterproductive for plant adaptation to climate change. The study suggests that only a few species of migratory birds have the potential to help plants move to cooler latitudes and adapt to changing conditions.
New research shows that dense sweet pittosporum canopies reduce bird richness and abundance, leading to declines in ground-dwelling birds. Restoration projects must balance weed control with retention of structural value to support local plants and animals.
A recent study by Hebrew University researchers identified molecular factors that allow birds to fly, differing from mammals and reptiles. The ephrin-B3 molecule plays a crucial role in coordinating wing movement, enabling birds to flap and take flight.
A study examining global occurrences and population estimates for approximately 92% of all extant bird species found that there are approximately 50 billion individual birds in the world. Most bird species are rare, with only a few having estimated global populations of over 1 billion individuals.
A new study by the University of New South Wales estimates that there are approximately 50 billion individual birds in the world, with many iconic Australian species falling within this number. However, other rare species like the Black-breasted Buttonquail have only around 100 members left, highlighting the need for conservation efforts.
Great reed warblers climb to record-breaking daytime cruising altitudes of up to 6,200 meters when crossing the Mediterranean Sea and Sahara Desert. This previously unknown behavior may help explain the evolution of nocturnal migration in migratory birds.
Researchers discovered that bird blood functions as a central heating system when it is cold, thanks to the presence of mitochondria. The study found that birds produce more heat through their blood cells during winter, challenging the common assumption that shivering and fluffing feathers are the primary methods for thermoregulation.
Researchers used weather radar to create a forecasting system for nocturnal bird migration in the US, finding that just 10 nights of action can reduce risk by 50% for avian migrants passing over an area. This data enables more 'mindful' approaches to protect migrating birds from threats like light pollution and collisions with structures.
Researchers found that populations of great tits can switch from one behavior to a more efficient alternative when group members are replaced with new birds. Fluid social groups were more likely to adopt the new behavior, allowing them to adapt to changing environments.
The critically endangered regent honeyeater is losing its 'song culture' due to declining populations. Research found that males sing simplified or incorrect songs when birds are rare, affecting their ability to communicate with females.
A 30-year study in Tanzania found that warmer climates slow the population growth rates of tropical birds, particularly those with smaller bodies and lower elevation ranges. Climate effects on insect abundance, predator activity, or fruit timing may also negatively impact bird populations.
Researchers analyzed blood samples from over 1,000 bird species to understand malaria ecology. They found that the strains of malaria present in a local area don't always align with the types of birds living there, instead being influenced by weather patterns such as rainfall.
A new NASA-funded project aims to understand the effects of cities as ecological traps for migrating birds. Researchers will use radar data and community science tools to count up to 1.1 million birds in urban areas, measuring their behavior and impact on populations.
Zebra finches select familiar nest materials when successful breeding, while less experienced birds experiment with new materials. This study challenges long-held assumptions about bird nesting behavior, showing that animals learn and modify their nests based on past experiences.
A study reveals three distinct periods of rapid species diversification in birds, linked to key adaptations for flight and diet. These events are influenced by long-term climate changes and the Cretaceous-Paleogene mass extinction event.
A new study found that individual yellow warblers exhibit similar climatic preferences across their migratory range, tracking dry or wetter areas rather than warmer or cooler ones. This adaptation could help the species respond to changing climate conditions.
Researchers studied Himalayan songbirds and found that those living at higher elevations have more fluffy down feathers than lower-elevation birds. Smaller-bodied birds with longer feathers in proportion to their body size also tend to have thicker insulation.
Researchers at Bangor University discovered that birds displaced beyond their normal migratory route can still use the Earth's magnetic signature to find their way back, a feat known as true navigation. The Eurasian reed warbler was found to be able to extrapolate its position from magnetic signals even when far beyond familiar territory.
A review published in the Journal Birds suggests that studying birds in their natural habitats can improve zoo management and conservation efforts. By analyzing the ecological role of bird species, zoos can design enclosures that support reproduction and develop conservation actions.
A study by University of Groningen researchers found that older female Seychelles warblers benefit from having helpers when raising their young. The data show that social behaviour increases reproductive success for older females, compensating for age-related declines in parental care.
Researchers studied seabirds' flight performance and found that birds with larger muscle fibers flew faster despite beating their wings less frequently. They also discovered that birds with a higher number of nuclei in their muscle cells could activate more muscle fibers to power flight.
A new study from Cornell University examines public attitudes towards non-native birds and whether people are willing to manage them to protect native cavity-nesting birds. Researchers found that citizen-science project participants were more likely to have negative views of non-native species and undertake management practices.
A new study identifies three main groups of Indonesian songbird owners: hobbyists, contestants, and breeders. The research suggests that up to 7 million households represent the greatest threat to Indonesia's avian biodiversity, with a preference for convenience and availability driving demand.
The discovery of feather sheaths on the Archaeopteryx fossil provides evidence of a sequential centre-out moulting strategy, used by modern falcons to preserve maximum flight performance. This finding sheds light on the evolution of flight in birds and suggests that this strategy was present at the earliest origins of flight.
A study found that warmer springs in southern Illinois allow prothonotary warblers to start laying eggs earlier, increasing the chances of raising two broods of offspring. This adaptability may provide a reproductive advantage for the birds, but could be threatened by continued climate change.
A study led by UCL researchers found that flightlessness evolved in birds at least four times as often as expected. With 166 extinct species lacking flying ability, the findings show how human-driven extinctions have biased our understanding of evolution, altering most ecosystems worldwide.
A newly discovered bird fossil, Falcatakely, sheds light on the evolution of complex anatomy and provides new perspectives on bird facial structure. The species boasts a unique, scythe-like beak shape and is part of an extinct group known as Enantiornithes.
The SPI-Birds initiative combines breeding population data of 1.5 million individually recognisable birds to answer ecology and evolution questions. The project aims to inspire other research communities to create their own standards, promoting FAIR data use.
A study found that both temperate and tropical birds can tolerate high temperatures, with some species, such as doves and pigeons, exceeding heat limits, providing a buffer against climate warming. However, caution is needed as indirect effects on resources and forest structure may impact bird populations.
The study provides a comprehensive genomic resource for the world's birds, enabling researchers to explore evolutionary relationships and traits. More than 92% of the world's avian families are represented in the dataset, which will aid in the conservation of threatened species.
A new study found that noise and light pollution alter bird nesting habits and success in North America. Birds responding to increased light may track climate change better than those in darker habitats. Noise pollution affects birds differently, with forested environments being more sensitive to noise.
Feather color changes in birds are influenced by molt, which is necessary for flight and attracts mates. Birds that migrate farther distances replace more feathers during their journeys.
A new study by Duke University researchers reveals that dull-colored birds like Bengalese finches categorize colors in a unique way, focusing on brightness rather than hue. This difference is attributed to their evolutionary environment and the signals they've adapted to detect.
A new study from Cornell University confirms that most birds synchronize their migrations with seasonal vegetation changes, but carnivores and insect-eaters show weaker ties. Climate change threatens these patterns as vegetation cues become less reliable.
Fossils found in Antarctica reveal the largest individuals of an extinct group of seabirds, which lived for up to 60 million years, dwarfing today's largest bird. The discovery sheds light on bird evolution and highlights the diversity of Antarctic birds during a warmer climate 50 million years ago.
Two small dinosaurs, Yi and Ambopteryx, had bat-like wings but struggled to fly, instead gliding between trees. Their unique wing membranes allowed them to glide, but not powered flight. The study supports that dinosaurs evolved flight in multiple ways before modern birds evolved.
The Dome of the Rock's marble slabs depict two birds, which break the symmetry of the southern wall and have remained unchanged for over 350 years. Sufi traditions and stories about Solomon and the birds demonstrate their influence on the shrine's conception.
A new metric, stopover-to-passage ratio, helps determine when birds fly over a site or stop to refuel or rest. The study reveals critical importance of habitats around the US Gulf Coast for sustaining migratory birds, with over half stopping at these sites.
Birds with larger eyes are better adapted to dark environments, while those in agricultural settings often have smaller eyes. The study found that eye size is linked to habitat and foraging technique, suggesting it could help inform research on birds' sensitivity to bright environments.
Researchers use innovative microscopy method to analyze bird brain structure, finding similarities with mammalian neocortex. The study reveals horizontal and vertical layers, refuting long-held assumptions about avian brain organization.
Two studies found that birds' pallium exhibits a layered architecture similar to mammals', potentially enabling complex cognitive abilities like consciousness. This structure may have been present in the last common ancestor of birds and mammals 320 million years ago, or evolved independently through convergent evolution.
A new study reveals that the reduction of humanmade noise from the COVID-19 pandemic shutdown led to a change in the quality of birdsong in white-crowned sparrows in the San Francisco Bay area, with birds in urban areas exhibiting greater vocal performance.
Researchers discovered that Fork-tailed Flycatchers produce unique sounds by fluttering their feathers, which differ between subspecies with varying migration patterns. The distinct 'dialects' may contribute to the species splitting into separate entities.
Scientists analyzed geochemical data from mummy remains to determine if they were bred or hunted. The results indicate that the birds were wild and migrating seasonally, suggesting mass hunting and capture. This discovery sheds light on ancient Egyptian practices and their impact on the environment.
Researchers at the University of Hong Kong used Laser-Stimulated Fluorescence to reveal the fingernail-like 'soft beak' of Confuciusornis, a feature found in every bird. The study suggests that early beaked birds were suited to eating soft foods and offers new insights into ancient bird evolution.
Researchers tracked acorn woodpecker warriors using radio tags, finding they fight for days-long to win territories, while spectators travel great distances to collect social information from the battles. The complex social behavior of woodpeckers reveals intricate networks and rivalries among the birds.
Small-scale poultry farmers in Vietnam quickly sell their birds during viral outbreaks to avoid financial loss, increasing disease transmission. This practice can contaminate other birds and expose consumers to risk.
Researchers found that selective breeding of junglefowl for reduced fear led to changes in brain composition and affected fear memory. The domesticated birds became accustomed to non-hazardous events more rapidly due to smaller brains relative to body size.
A team of researchers found that black-naped terns adjust their migration timing and path based on typhoon activity, with those migrating during peak typhoon season targeting stopover areas. The study used geographic tracking data from 20 birds to understand how the birds respond to environmental cues and optimize their routes.
The publication provides a comprehensive overview of pennaraptoran theropods, covering their fossil record, systematics, anatomy, and early flight studies. Key findings include the identification of key avian traits that originated deep within theropod evolution and the discovery of unique reproductive strategies.
A new study by Duke University researchers suggests that songbirds perform better during the day when they warm up their voices in the early morning hours. By singing early and often, birds improve their trill rate and vocal range, ultimately nailing their songs during the day.
A recent study challenges the notion that birds evolved rapidly following the mass extinction of non-avian dinosaurs. Instead, researchers found that bird skull evolution actually slowed down compared to non-avian dinosaurs. This slower pace of evolution is attributed to adaptations in beak shape and size.
A new study from the University of Illinois reveals a significant decline in US bird biodiversity related to neonicotinoid use, particularly affecting grassland birds. The research found a 2.2% decline in grassland bird populations for every 100 kg increase in neonicotinoid usage per county.
Researchers found that powered flight potential evolved at least three times in theropods: once in birds and twice in dromaeosaurids. This challenges the traditional view of bird origins, presenting a more complex picture of experimentation with wing-assisted locomotion.
An international study reconstructs powered flight potential in theropod dinosaurs, finding it evolved at least three times. Many ancestors of bird relatives experimented with wing-assisted locomotion before flight evolved.