Human & Animal Health

Deforestation in Neotropics Limits Nesting Habitat for Cavity-nesting Birds

With an extendable pole fitted with a small camera, Alison Ke could get a clear view of the inside of a nest box, including one time when a small, green Pacific parrotlet laid eggs. Ke, who earned a Ph.D. in ecology from UC Davis, led a research project to find out how converting rainforest to farmland affects the habitat of birds who rely on tree holes, or cavities, for nesting.

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Sierra Squirrels Find Their Niche Amid a Changing Climate

As the climate changes, many species are expected to adjust where and how they live. Some are expected to seek cooler elevations as it warms, but what happens to species already at the top of a mountain? A study of squirrels living in California’s high-elevation Sierra Nevada indicates that climate is only one factor to consider when trying to predict where an animal will make its home in a changing world.  

Rainbow Trout Subspecies Newly Named

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.

Are California Soda Taxes Effective?

California is home to four of the eight active soda taxes in the United States, but are these policies successfully decreasing the consumption of sugary beverages in these cities? New research out of UC Davis suggests that, in most cases, these soda taxes did not reduce retail sales.

Surprising Benefits of Using Sheep as Lawn Mowers

Bicycles whirr by, students rush to class, staff and faculty are grabbing lunch or coffee on the go — and sheep graze the grassy knolls among the traffic, bleating every now and then. The grazing is their job. 

The 25 wooly sheep who seasonally — for the past two years — leave their UC Davis barns to nibble on lawns at various central campus locations, are doing much more than mowing, fertilizing and improving the ecosystem. The sheep also are improving people’s mental health.