Studies revealed that Diego, a Galapagos giant tortoise, fathered almost 40 percent of the young offsprings released in the wild on Española Island in the Galapagos Islands. His sexual exploits may just save his species from extinction.
Conservationist Sacha Dench will undertake a 4,500-mile flight with migrating Bewick's swans in September to find out why their numbers have been plummeting in the past two decades.
The Bahamas, the Caribbean, Florida and Mexico are just some of the places that witness the spectacular coastal bird, Reddish egret. Unfortunately, this fascinating bird is slowly declining in number and is becoming a rare sight in many places lately.
Alligators are growing much smaller and reproducing less in the Florida Everglades. As an indicator species, this suggests the local ecosystem is in poor health, which puts dozens of other threatened and endangered species at risk, too.
A huge number, 150,000, of Adélie penguins have disappeared from Antarctica's Commonwealth Bay. A recent study tied the occurrence to a giant iceberg that grounded in the area, isolating the penguins and causing them to starve to death. But critics are challenging that claim, suggesting that the birds relocated, instead.
When a giant iceberg crashed down in Commonwealth Bay, Antarctica, in 2010 it isolated a colony of Adélie penguins. Having to trek much farther for food, 150,000 penguins have died, putting the colony at risk of extinction.
A rare western bumblebee species appears to be staging a comeback in the Pacific Northwest after experiencing dramatic population declines in the 1990s. Researchers are unsure what exactly caused the decline in the first place, but what remains even more of a mystery is why the bees have suddenly rebounded.
Researchers have discovered that the vast majority of infected hives can be traced back to one source -- the European honeybee, which is consistenly traded and imported to North America.
Reed warblers have set up a "neighborhood watch" to protect their nests from invasive cuckoos, who lay their eggs in local nests for others to raise. When reed warblers spot a cuckoo, they mob it and emit alarm calls that alert neighbors a cuckoo is at large and they should monitor their eggs closely. This has greatly benefited warblers, but cuckoo populations appear to be suffering.
Minnesota Department of Natural Resources researchers are making strides toward figuring out what is killing the state's moose. Preliminary reports suggest it is a combination of health issues and increased predation.
Although rhino poaching decreased slightly in South Africa, experts say 2015 was a record breaker for illegal rhino kills across the entire continent.
Since the dawn of the 21st century bats, have been dying at an alarming rate. After combing through hundreds of years of data, researchers found humans may be making matters worse by installing wind turbines all over the world. And the spread of white-nosed syndrome across North America is certainly wiping out populations, too.
"Twilight zone" reef fish face numerous threats when diving deep underwater, but those with forked tails may have an advantage: they can swim quietly past predators and evade natural disasters such as cyclones and coral bleaching.
While we've been pretty sure for a while that neonicotinioid insecticides threaten honeybees, here is new information on threats from pesticides commonly used on some of the U.S.'s key crops, suggesting our government needs to increase regulation on some agricultural practices.
Researchers from the University of Sydney have trained Australian monitor lizards to avoid eating deadly cane toads, by feeding them smaller, non-lethal ones. This could help save endangered lizards that have recently suffered catastrophic population declines, following poisonous toad invasions.