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As the number of oiled seabirds found on Northern California beaches since Nov. 24 tops 1,000, the regional rescue center is asking again for volunteer help.

"This is a very persistent spill. We continue to receive oiled birds daily from beaches between Bodega Bay and Monterey," said Michael Ziccardi, one of four °ÄÃÅÁùºÏ²Ê×ÊÁÏ¿â Davis wildlife veterinarians who manage animal care for the . "Before the holidays, we had a terrific response to our call for volunteers, but now we have only one-fifth the number that we need."

This extended emergency, named the San Mateo Mystery Spill because its source has not yet been identified, has been the first crisis to use the new . Located in Cordelia, the 12,000-square-foot, $2.7 million facility was completed in February. It is one of nine regional centers in the statewide Oiled Wildlife Care Network.

As of this morning, a total of 1,005 birds, mostly common murres, had been recovered. Of those, 577 were found dead. Of the 428 that reached the rescue center alive, 131 died while in care, 97 had to be euthanized, 92 have been rehabilitated and released, and 108 are in various stages of recovery at the center.

That 47 percent survival rate means the new center is a success, Ziccardi said. "Unlike any previous spill in the Bay Area, we now have a facility in place, designed specifically to care for up to 1,000 oiled birds, with trained staff immediately available on-site. From the first day, birds have received care as soon as they were found, instead of having to wait, sick and cold, while we put together a rescue center."

When a bird arrives at the center, it is evaluated, treated, washed and rehabilitated by the professional staff of (IBRRC), one of 24 participant organizations in the Oiled Wildlife Care Network. Volunteers help throughout the process.

IBRRC director Jay Holcomb said this spill is particularly frustrating because it is ongoing and because it is affecting common murres, whose numbers have been reduced by other spills over the years.

"Unlike nature, which tends to take the weak, oil spills do not discriminate," he said. "All birds are affected, including the breeding adults that are needed to keep the population at a healthy level."

Anyone wishing to volunteer should call the center at (707) 207-0380, extension 107. Needed are volunteers age 18 or older who can work four-hour shifts helping the IBRRC staff prepare bird food, clean pools and wash soiled towels. Shifts run from 8 a.m. to noon, noon to 4 p.m., and 4 p.m. to 8 p.m.

No previous experience or training is needed for those volunteer positions. Volunteers who would like to serve in other positions that require handling the oiled birds must complete one four-hour training class. Two classes will be offered next week: Friday, Jan. 11, 1 p.m. to 5 p.m., and Saturday, Jan. 12, 9 a.m. to 1 p.m.

The Oiled Wildlife Care Network is managed statewide by the °ÄÃÅÁùºÏ²Ê×ÊÁÏ¿â Davis , a unit of the °ÄÃÅÁùºÏ²Ê×ÊÁÏ¿â Davis School of Veterinary Medicine. The network is funded by the of the California Department of Fish and Game. The Fish and Game monies come from interest on the $50 million California Oil Spill Response Trust Fund, built from assessments on the oil industry.