Logged as in written to the transaction log?
If so, yes. All operations are logged and there's no way to turn logging off.
If your database is in Bulk-logged recovery, the bcp may be bulk-logged. Look up bulk operations and bulk-logged recovery in SQL's Books online for more info.
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability
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