Tag: decline

Monarch butterflies (Danaus plexippus) stopping over in Florida while traveling north have declined 80 percent since 2005, according to a new study. The monarchs stop in Florida on their spring...

Climate change may be the main reason behind a great decline in shorebird populations around the world, researchers found. After looking at 38,191 nests of 111 species across the world,...

Turtles are rapidly going extinct, researchers found, but many people have no idea they’re vanishing and are unaware of the valuable ecological roles they play. Whit Gibbons, professor emeritus of...

Why are monarch butterflies on the decline? “The migration itself might be the problem,” researcher Anurag Agrawal told the Washington Post. Agrawal is lead author on a paper in Science...

Conservationists tend to focus on safeguarding species that are ecologically or economically beneficial, limited in number or suffering severe population decline. But are they leaving out other important values? A...

After a decades-long recovery, California sea lions (Zalophus californianus) are dwindling again due to climate-driven reductions in prey, a recent long-term study shows. Centuries of human exploitation had once suppressed...

With their bright beaks and crescent-shaped eyes, puffins are adored by animal lovers, but the pint-sized seabirds have been something of a mystery to scientists. GPS trackers have been too...

Researchers recently found what they believe may be an unexpected cause of bee decline in the United States — fungicides. Looking at sites across the country where bee populations were...

Trappers and furbearer biologists have been reporting since the mid-1980s that muskrats (Ondatra zibethicus) seemed to be appearing in fewer and fewer numbers, but they only had anecdotal evidence, until...

A paper in the Proceedings of the National Academy of Sciences warns that dramatic population declines of thousands of species may be imminent. The study found about 30 percent of...