Mammals and birds today are warm-blooded, and this is often taken as the reason for their great success.
A team of scientists led by the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW) investigated whether and how the immune response changes between pre-migration and migration seasons in the Nathusius pipistrelle bat. They confirmed that migratory bats favour the energetically ”cheaper” non-cellular (humoral) immunity during an immune challenge and selectively suppress cellular immune responses. Thereby, bats save energy much needed for their annual migration.
A team of researchers have developed a new metric called the stopover-to-passage ratio that can help determine if a majority of birds are flying over a particular site or stopping at the site to refuel or rest. The answer to this question can have important implications for what action is ultimately taken on the ground to help migratory birds.
Plastic gathered from remote corners of the South Pacific Ocean, including nesting areas of New Zealand albatrosses, has confirmed the global threat of plastic pollution to seabirds.
The American pika is a charismatic, diminutive relative of rabbits that some researchers say is at high risk of extinction due to climate change. Pikas typically live in cool habitats, often in mountains, under rocks and boulders. Because pikas are…
The American pika is a charismatic, diminutive relative of rabbits that some researchers say is at high risk of extinction due to climate change. A new review finds that the American pika is far more resilient in the face of warm temperatures than previously believed.
Tropical Forests may be more resilient to climate change than previously thought, according to ecologists. The results help solve an ongoing debate about the mechanism responsible for declines in tropical forest productivity that go hand in hand with rising global temperatures.
Despite being championed by a host of celebrity chefs, crayfish ‘trapping’ is not helping to control invasive American signal crayfish, according to new research.