It was a fairly routine wellness exam in the Northwest Trek veterinary clinic this week – but with a very special guest. “See, I’m just extending the wing out here to look at his plumage,” says Trek veterinarian Dr. Allison Case, gently unfolding the white underfeathers of Teklus, the barn owl. Reaching with one finger, Dorothy “Doro” Oliver leaned over the peacefully-sleeping bird in awe. “He’s so soft,” she whispered. For Teklus – the Lushootseed word for owl, pronounced “tukloose” and shortened to “Tuck” by staff – it was just an ordinary exam. But for Oliver – celebrating a birthday …