Communicating nightingales: Older males trill better

Older male nightingales perform faster and more demanding trills than their younger rivals. These findings were published by researchers at the University of Basel and the Netherlands Institute of Ecology in the online edition ...

Doctoral student sheds light on Asian bird's migration patterns

(Phys.org) —An Arizona State University biologist and her team have found that the Asian subspecies of great bustard, one of the heaviest birds capable of flight, covers migratory routes of more than 2,000 miles, travelling ...

A tool to measure stress hormone in birds -- feathers

When faced with environmental threats like bad weather, predators or oil spills, wild birds secrete a hormone called corticosterone. Traditionally, researchers have analyzed blood samples to detect corticosterone levels in ...

Every egg is different

Migratory birds have to allocate their resources for reproduction in an efficient way in order to commence breeding shortly after arrival. Researchers from the Max Planck Institute for Ornithology in Seewiesen studied pectoral ...