Tyson Research Center

Lazarus, a male Mexican wolf, at the Endangered Wolf Center in Eureka.
Mary Delach Leonard|St. Louis Public Radio

Volunteer Lisa Houska is hunkered down next to a tall cyclone fence at the Endangered Wolf Center in Eureka. She’s peering at a hillside, observing a handsome pair of thick-furred Mexican wolves and their three pups that were born last year.

“We’re watching Sibi and Lazarus. This is their second breeding season,’’ Houska whispers.

For two hours on this unseasonably warm winter morning she’ll sit motionless, trying not to disturb the family. She’s hoping to witness another successful courtship between mom and dad.

(Jon Wingo/DJM Ecological Services)

Researchers are conducting controlled burns this week at Washington University’s Tyson Research Center southwest of St. Louis.

The burns are part of a project to study how to restore Ozark glades – rocky forest clearings with native species that resemble those of the desert southwest.

Washington University ecologist and project lead Tiffany Knight says fire is a natural part of glade ecosystems.