Tag: stable isotope analysis

Invasive bullfrogs and sunfish in the southwestern Washington floodplains don’t seem to be a detriment to native amphibians and fish in the area. That’s surprising, researchers say, since that isn’t...

Seabirds in Hawaii have changed their prey preference over the last 125 years, according to new research, suggesting that more birds are consuming squid rather than fish. This shift to...

Bobolinks (Dolichonyx oryzivorus) travel 12,000 miles each year to their North American breeding areas, where they have experienced habitat loss and degradation for decades. The declining grassland bird may also...

A changing environment in the Greater Yellowstone Ecosystem, including a decrease in whitebark pine trees, might be causing some trouble for grizzly bears (Ursus arctos), which prefer to eat the...

Genetic and isotope detective work is revealing the mysteries of where some of the bat species most often killed by wind turbines come from. “These are an enigmatic species,” said...