A new study found that the presence of peregrine falcons in the Bay Area dropped by 65% after an outbreak of H5N1 highly pathogenic avian influenza. The decline is synchronous with the outbreak, which has affected millions of birds globally.
A new study successfully uses audio deterrents to alert golden eagles to wind turbines, reducing collisions and deaths by over 50% at two wind farms in the Western USA. The system, called DTBird, emits warning sounds to attract the birds' attention and discourages closer approaches.
Researchers observe Eurasian Hobbies feeding on bats in a protected wetland in Greece, highlighting the importance of local prey populations for migratory raptors. The study's findings have strong conservation implications and demonstrate the need to protect habitats and prey species.
A new study found Turkey Vulture populations increasing by almost 300% over 25 years, with delayed migration departure dates. This could be linked to climate change, which researchers hope will inspire further investigation.
Research by Cheryl Dykstra and her team found a correlation between higher quality territories and the proportion of female nestlings. The study also revealed that solitary young are more likely to be female than male, with eggs laid later in the season increasing the probability of hatching into a male.
Short-eared owls travel long distances to find prey in 'boom and bust' cycles, requiring nuanced perception. Climate change affects these cycles, making conservation efforts crucial for the species' survival.
A recent study found that releasing rehabilitated Golden Eagles can be an effective means of compensating for eagle deaths due to human actions. However, the study revealed that only a few rehabilitated eagles survive and integrate into the wild population, raising questions about the long-term efficacy of rehabilitation efforts.
A new study finds Golden Eagles in Nevada at risk due to high mortality rates and habitat loss, potentially drawing in birds from other areas. Conservation efforts, such as maintaining natural habitat structure, are crucial to mitigating these impacts.
A recent study found that Arizona Bald Eagles migrate north instead of south, unlike most migratory birds in temperate zones. This adaptability allows them to take advantage of ephemeral food sources, such as spawning salmon or ungulate carcasses.
A new statistical model using GPS tracking data accurately predicted nest success for the California Condor, demonstrating its potential to inform conservation decisions. The model's results were corroborated by field observations and camera footage, allowing researchers to assess nest fate with high accuracy.
Researchers found that translocating Cooper's Hawks away from Los Angeles airports can reduce the risk of aircraft collisions. The study, published in Journal of Raptor Research, showed that age and sex of individual hawks impact return rates to their airport of origin.
A study found 3,196 poisoning events in European raptors, with scavenging birds disproportionately affected by carbofuran and aldicarb. The most commonly poisoned species was the Eurasian Buzzard, highlighting the need for targeted conservation efforts.
A study tracking 89 Northern Saw Whet Owls in Western Montana reveals stopover behavior and notable individual variation, highlighting the complexity of their migrations. The research sheds new light on the migration patterns of North America's smallest owl, with implications for conservation efforts and further studies on other owl sp...
A new study provides insight into the American Kestrel's mysterious decline by examining juvenile survival rates, revealing high success in the first weeks outside of the nest. This breakthrough may redirect future studies to untapped areas of inquiry and inform conservation efforts.
A new study found that wind power projects in Oregon and Washington alter the structure of nesting raptor communities. Golden Eagles and Ferruginous Hawks declined in abundance, while Great-horned Owls increased. The research emphasizes the need to consider community composition in raptor conservation.
A new study found that designated protected areas are benefiting Mexican Spotted Owl subspecies, maintaining their foothold in the region. The use of Protected Activity Centers, which protect core habitat, has been key to this success.
A study published in the Journal of Raptor Research found that turkey vultures in southern California are still exposed to anticoagulant rodenticides, even with recent bans in place. The researchers recommend continued monitoring and adherence to legislation regarding rodenticide use.
Researchers found that urban Red-shouldered Hawks exhibit stronger aggressive defense behaviors when nesting close to the ground. The study highlights the importance of understanding individual personality traits and environmental factors in determining nest defense behavior.
Drones offer a hands-off option for surveying raptor nests, providing an efficient and safer alternative to traditional methods. Researchers found minimal impact on raptors and higher safety for both humans and birds compared to approaching nests by foot.
A new Conservation Letter reviews the impact of built environments on raptors, identifying vehicles, wind turbines, and windows as consistently problematic obstacles. Proposed solutions include flight diverters, bird-friendly products, and habitat management to reduce collision fatalities and support conservation efforts.
Researchers identified Nagaland, Northeast India, as a critical stopover site for Amur Falcons, where the birds consume two billion termites in just over fifteen days. The findings highlight the importance of insect-rich environments in supporting the falcons' migration.
A recent study published in The Journal of Raptor Research found that Ferruginous Hawk populations are increasing in California, contrary to declining trends in other grassland bird species. Citizen science data analysis revealed a significant decrease in habitat quality yet an increase in hawk abundance across California.
A two-year study on nesting behaviors of Chimango Caracaras reveals that pairs share most parental responsibilities, including incubation, brooding, and food deliveries. This collaborative approach allows the birds to adapt to unpredictable food sources, which is unique among raptor species.
Researchers discover Striated Caracaras' playful behavior, showing they interact with objects for fun and explore novel items. The study sheds light on how these birds learn about their environment and could provide insights into the evolution of play in nature.
A recent study found that urban hawks are vulnerable to a range of threats, including collisions with windows and direct killing by humans. The researchers used GPS transmitters to track the movements of 158 female Cooper's hawks in Albuquerque, New Mexico, and found that 88 died over the course of 11 years.
A new study reveals that prairie dogs are a crucial prey source for four species of raptors, including bald eagles, overwintering in the Southern Great Plains. The relationship between prairie dogs and their aerial predators has implications for raptor conservation through climate change.
A new protocol has been implemented, compensating loggers to leave kite nesting sites alone. The results show that 37 young raptors were saved over 7 years. This innovative approach demonstrates the benefits of dialogue between public and private sectors in conservation.
A new study reveals that landfills in Chile's Loma Los Colorados host the largest known aggregation of Andean Condors. The birds' numbers are linked to food availability in the surrounding landscape and fluctuate with livestock movements. Landfill management is crucial to support condor conservation.
A new study reveals that female American Kestrels venture away from their nests to scout future territories, a behavior previously undocumented in the species. These movements, which cover large distances relative to home range size, suggest that females may be holding multiple summer homes and using better habitat after breeding.
A new study published in the Journal of Raptor Research found that two colonies of white-rumped vultures in Nepal demonstrated stable reproductive rates over an 11-year period. The number of occupied nests and productivity appeared to be stable, indicating a potential turning point for the critically endangered species.
A study reveals that cattle stock tanks can provide crucial water sources for raptors in the Southwestern US, helping them cope with heat stress. The research found that these tanks are used by various raptor species, including barn owls and Swainson's hawks, to drink and bathe.
Researchers uncover multiple factors contributing to kestrel declines, including the impact of Cooper's Hawks and habitat degradation. The study suggests that population increases may be seen in some areas, but overall decline trends indicate a need for conservation efforts.