To tag birds migrating, the U.S. Department of the Interior used metal bands that bear the address of the Washington Biological Survey, abbreviated:  Wash. Biol. Surv.  Until the agency received the following letter from a camper:  Dear Sirs,  While camping last week I shot one of your birds. I think it was a crow. I followed the cooking instructions on the leg tag and I want to tell you it was horrible.