Smaller hatchlings who have to compete with larger siblings for food grow up become obese adults birds, say researchers who tested starling hatchlings to determine whether competition for food after birth had a long-lasting effect.
The shape of a bird's wings depends greatly on its lineage rather than on distinctive flght styles.
Heavy metals such as mercury, chrome and copper alter the brightness of some birds' feathers, making them seem less attractive to females.
Some butterflies have developed a toxic chemical that makes them poisonous to some birds. However, birds recognize which butterflies are lethal and avoid eating them. Since not all butterflies are equipped with such predatory defenses, they mimic their lethal counterparts and trick birds into thinking they are poisonous too.
Researchers University of Kansas recently uncovered fossils representing the largest known feathered raptor. The species has since been named Dakotaraptor and it's closing the gap in the evolutionary gap between dinosaurs and modern birds.
When studying muscle strain during jaw opening in three dinosaur species, researchers found that the Tyrannosaurus rex could extend its jaw 90 degrees –- a skill that came in extremely handy for carnivorous predators.
Cowbirds lay their eggs in neighboring nests and abandon the to be raised by surrogate bird parents. Researchers recently spent some attempting to figure out whether the birds know they are different from their adopted families and how they handle it in terms of feeding, mating and flocking.
Atlantic puffins, European turtle doves, Slavonian grebes, and pochards are now listed as "vulnerable" species on the International Union for Conservation of Nature's (IUCN) Red List of Threatened Species for birds. This doubles the number of endangered U.K. birds.
Rare Hawaiian forest birds may lose half of their natural high-elevation habitat by the end of the century, thanks to climate shifts and disease outbreaks.
Halloween is often associated with many iconic, spooky animals. From spiders, to black cats, ravens, werewolves and vampire bats, innocent creatures seem to get a bad rep for the fear they instill in humans. But are the animals really all that spooky?
Researchers from the University of Alberta recently discovered fossilized tail feathers and soft tissues of an Ornithomimus dinosaur that shed light on the evolution of modern-day birds such as ostriches and emus.
Deciduous trees along rivers and streams provide protection from damaging solar radiation and valuable foliage every autumn. Fallen leaves act as a vital food source for insects, and keeping insect populations healthy could ultimately help river ecosystems combat climate change, researchers reveal in a new study.
European rollers are facing deforestation in Europe and their yearly winter migration to Africa is getting tougher each year. Now researchers have identified key areas that will help conservationists better protect the threatened species.
Indian Mynas are also carrying exotic strands of avian malaria which is threatening native wildlife.