A ground squirrel with cheeks stuffed with nuts, seeds or grains, is a common sight. But a new study provides the first evidence that California ground squirrels also hunt, kill and eat voles. The study, led by the University of Wisconsin-Eau Claire and the University of California, Davis, is the first to chronicle widespread carnivorous behavior among squirrels.

Researchers have sequenced the whitebark pine genome, presenting new opportunities to help the threatened, high-altitude tree endure environmental challenges.

Bird populations are in rapid decline across North America. While climate change is just one of the many factors influencing North American birds, its effects are significant and can interact with other stressors, such as habitat loss. A team of University of California, Davis, researchers found that the effects of extreme temperatures on avian reproduction can vary depending on the type of environment that birds call home.

They woke up gasping for air. At 14,505 feet, Mount Whitney is not the typical place to take a nap. But if a spectacular sunrise is the goal, braving out the bone-chilling cold and lack of air is the price to pay. 

Grace Cureton, a fifth year Community and Regional Development major at UC Davis, spent their summer high in the alpine. For 41 days without service, a massive backpack, heaps of dehydrated food, and a small crew of researchers were all they knew. 

“It's a hard transition back. Everything is very stimulating now,” Cureton admitted.

The California Department of Fish and Wildlife (CDFW) and National Oceanic and Atmospheric Administration (NOAA) Fisheries biologists are pursuing urgent measures this fall to save some of the last remaining Central Valley spring-run Chinook salmon after the numbers returning from the ocean this year fell sharply toward extinction.

The McCloud River redband trout, or O. mykiss calisulat, is newly identified as its own distinct subspecies of rainbow trout in a study from the University of California, Davis. It is the first newly identified subspecies of Pacific trout since 2008 and the youngest rainbow trout subspecies by more than 100 years.

Spring is the sweet spot for breeding songbirds in California’s Central Valley – not too hot, not too wet. But climate change models indicate the region will experience more rainfall during the breeding season, and days of extreme heat are expected to increase. Both changes threaten the reproductive success of songbirds, according to a study from the University of California, Davis. 

Redwoods are among the most well-studied trees on the planet, and yet their mysteries continue to surprise and delight scientists and nature lovers. 

The idea of food chains and food webs in the animal kingdom is simple: Remove a link or thread, and the system is broken. But nature is complex, and it’s not always clear how the absence of one species may impact others. 

Other times, the connection is devastatingly clear. 

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When pay-to-conserve programs don’t come through with payments, they don’t conserve, indicates a case study by the University of California, Davis, of a REDD+ Readiness program on the island of Pemba, off the coast of Tanzania.