A strange, rare hybrid bird was found in a Northeast suburb in San Antonio. The mysterious bird is the offspring of a blue jay and a green jay, which biologists say may be among the first examples of ...

The study found that bird species who nest in tree cavities have independently evolved heightened aggression across lineages, particularly in females. Scientists have long wondered whether evolution ...

Researchers have uncovered new insights into the evolution of bird behavior, revealing why certain mating systems persist while others disappear over time. Researchers at Rice University have ...