Researchers test the effects predators have on their prey’s cortisol levels in the wild

Concerns about biodiversity tend to focus on the loss of species from ecosystems, but a new study suggests that the loss of variation within species can also have important ecological consequences.

Researchers at Oxford University have discovered that peregrine falcons steer their attacks using the same control strategies as guided missiles.

The arrival 36 years ago of a strange bird to a remote island in the Galápagos archipelago has provided direct genetic evidence of a novel way in which new species arise.

On Nov. 23 in the journal Science, researchers from Princeton University and Uppsala University in Sweden report that the newcomer belonging to one species mated with a member of another species resident on the island, giving rise to a new species that today consists of roughly 30 individuals.

It’s no secret that human activities affect fish, particularly those that must migrate to reproduce. Years of building dams and polluting rivers in some regions have left fish such as salmon struggling to return to their home streams and give birth to the next generation.

Studies on mild fluctuations in weather have provided support for the idea that higher biodiversity results in more stable functioning of ecosystems, but critical appraisal of the evidence from extreme event studies is lacking.

To the untrained eye, Jeremy Gustafson’s 1,600-acre farm looks like all the others spread out across Iowa. Gazing at his conventional corn and soybean fields during a visit in June, I was hard-pressed to say where his neighbor’s tightly planted row crops ended and Gustafson’s began.

Fishes’ fear of sharks helps shape shallow reef habitats in the Pacific, according to new research by a scientist at Bigelow Laboratory for Ocean Sciences.

Researchers have determined how female grizzly bears keep their cubs safe while crossing the Trans-Canada Highway.

As American families sit down for the traditional turkey dinner this Thanksgiving, some will be giving thanks for a wild bird that is truly free range. Meleagris gallopavo, the wild turkey, has steadily gained in popularity with hunters since successful restoration efforts put it back on the table in the around the new millenium, bucking the trend of declining participation in hunting throughout the United States. The distinguished native bird is now second in popularity only to white tailed deer.