Two animal updates in the Merced Sun-Star

News about animals under study in distinct branches of UC Agriculture and Natural Resources were featured recently in the Merced Sun-Star. A female Pacific fisher being tracked in the Sierra Nevada by UC Berkeley scientists has established a den within Yosemite National Park, the paper reported. Meanwhile, UC Davis scientists are joining in research with Michigan State University to study the housing of egg-laying hens, another story said.

Researchers with the Sierra Nevada Adaptive Management Program Fisher Project track fishers, endangered members of the weasel family, using radio-telemetry. The Yosemite fisher was first captured in October 2009 in the Sierra National Forest and remained near the capture site for nearly a year. Recently, the fisher moved her kits to a den on the south side of Yosemite.

This is the first fisher that is part of the study to make a home within park boundaries.

In the chicken story, the newspaper reported that UC Davis and Michigan State received $6 million for the study from the Coalition for Sustainable Egg Supply, a group made up mostly of egg producers, purchasers and universities with major agriculture programs.

The research will compare three approaches to chicken housing:

• Conventional cage housing, now used by most U.S. egg producers.
• Enriched cage housing, larger than conventional cages and equipped with perches, nesting areas and foraging/dust-bathing materials.
• Cage-free aviary, a non-cage system that enables hens to roam along a building's floor level and have access to perches and nest boxes.

"The information gained will be useful to all consumers as they make decisions about what kinds of eggs to buy," the story quoted Joy Mench, a UC Davis animal science professor and director of the Center for Animal Welfare.

Pacific fisher, left, dens in Yosemite. UC Davis launches chicken housing study.

Read more