OLYMPIA, Wash. (AP) — Washington state agricultural officials say additional cases of bird flu have been confirmed with the most recent cases coming in Whatcom and Okanogan counties. The state Department of Agriculture said Friday that the cases were confirmed Thursday in non-commercial backyard flocks. Flock owners contacted the state’s sick bird hotline to report an unusual number of sudden bird deaths and sickness. The two flocks are quarantined and will be euthanized. State officials say reducing or eliminating contact between wild birds and domestic flocks is a key way to protect domestic birds from bird flu. Officials say other Washington counties with bird flu cases include Pacific, Spokane, Pierce, and Clallam.