One of the busiest highways in the western U.S. is I-25, a concrete artery that runs north to south across the state of Colorado, funneling roughly 100,000 cars per day through the fast-growing exurbs south of the capital, Denver. While I-25 facilitates human journeys, it disastrously truncates the movements of another set of commuters. For decades, mule deer, elk, black bears and other species have wandered onto the highway — with fatal consequences. Over a two-year period, from 2018 to 2020, the Colorado Department of Transportation (CDOT) tallied collisions with 76 deer, 15 bears and 10 pumas along a 14-mile (22.5-kilometer) stretch of asphalt. Moreover, the interstate’s walls of traffic deter many animals from even attempting to cross, preventing them from roaming between alpine forests and Colorado’s eastern prairies. Lately, however, this once-dangerous barrier has become far more accommodating to four-legged travelers. In 2021, Colorado completed the construction of five capacious, dirt-floored underpasses, flanked by more than 25 mi (40 km) of roadside fencing, to allow wildlife to meander safely and freely beneath I-25. A black bear approaches a vehicle on the Alcan (Alaska-Canada) Highway, possibly indicating how habituating animals to human food can lead to road conflicts. Image by Ben Goldfarb. And in December 2025, CDOT finished construction of an overpass, 200 feet wide by 209 long (61 by 64 meters), that arcs over six lanes of traffic near the town of Greenland. That makes it one of the largest human-made wildlife crossings on Earth. All told, CDOT says…This article was originally published on Mongabay

As the Democratic Republic of Congo grapples with another Ebola outbreak, bats have once again come under scrutiny as a possible reservoir for the virus. But according to bat ecologist Paul Webala, there is no conclusive scientific evidence linking bats to Ebola and the natural reservoir remains unknown. The current Ebola outbreak is caused by the Bundibugyo strain, a variant for which there are currently no approved vaccines or treatments, according to the World Health Organization. In this interview with Mongabay, Webala discusses why bats are often misunderstood, details the important ecological services they provide, and explains why habitat destruction may pose a greater risk for zoonotic diseases that spill over between animals and humans than bats themselves. Webala is a wildlife biologist at Maasai Mara University in Kenya who has studied bats for more than two decades. Rousettus aegyptiacus, commonly known as the Egyptian fruit bat, a widespread species found across much of Africa. Photo courtesy of Paul Webala. Mongabay: Many people immediately think of bats whenever there is an Ebola outbreak. Are bats unfairly stigmatized? Paul Webala: Bats are the second-largest group of mammals after rodents. Roughly 25% of all mammal species are bats. They play extremely important roles in ecosystems and are an integral part of biodiversity. Remove them, and entire ecological systems could begin to collapse. Unfortunately, bats are associated with many myths and misconceptions. Some communities associate them with death, evil spirits or bad omens. Because of these longstanding beliefs, bats have often been persecuted.…This article was originally published on Mongabay

Among the many inhabitants of Southeast Asia’s dense rainforests are hornbills — a group of birds that stand out with their raucous call, large, ostentatious beak and colorful feathers. Indonesia harbors 13 species, the most of any country in Asia, three of which are found nowhere else. Hornbills are rapidly losing their homes as large swaths of Indonesian forests are cut down to make way for plantations, mining, dams, cities and other development, or are scorched by wildfires. Trade in these birds also poses another serious threat. Hundreds of hornbills are entering the illegal trade in Indonesia, according to a new study published in the journal Wild, some of which are offered for sale online. They’re sold alive as pets or killed for their casques, the ivory-like appendages above their beaks, and their taxidermied heads, which are displayed as home décor. To understand the scope of this trade, researchers analyzed police and customs confiscation data and surveyed online ads from 2015 to 2025. They learned that this illegal commerce is widespread and involves every Indonesian hornbill species and some from Africa and the Philippines as well. Most birds were sold alive, suggesting they’re bought as pets. Facebook was the preferred online marketplace. “The scale of the hornbill trade in Indonesia is probably greater now than I’ve seen it in the past,” said study author and wildlife trade researcher Chris Shepherd from the U.S.-based Center for Biological Diversity. “It’s becoming, perhaps, trendier to keep hornbills.” Indonesia is infamous for its songbird…This article was originally published on Mongabay