Published: Jun 04, 2010 10:23 PM EDT
Updated: Jun 04, 2010 7:04 PM EDT

FORT JACKSON, La. (AP) - After six weeks with one to four birds a day coming into Louisiana's rescue center for oiled birds, 53 arrived Thursday and another 13 Friday morning.

And, says center spokesman Jay Holcomb, more are on their way from the rookery on Queen Bess Island, near Grand Isle.

He described it as a change from one level of crisis to another, but said it was something that people with Tri-State Bird Rescue and the International Bird Rescue Research Center always knew would happen. About 20 people are working at the center, and so far Holcomb says that's plenty.

He and veterinarians Heather Nevill of Tri-State and Sharon Taylor of the U.S. Fish and Wildlife Service say the birds were not yet ready for cleaning. They're being kept in wooden pens with mesh covers, white cloths over those and heat lamps to keep them warm so they won't preen themselves until they can be washed.

Note: Video contains disturbing images.