Could you transform your yard into a flourishing wildlife haven?. A Black-tailed Bumblebee flying to blue Ceanothus flowers (Bombus melanopygus). Four years ago, Melody Murray started noticing these cute signs in her Portland, Oregon, neighborhood of Sullivan’s Gulch. Posted in residents’ front yards, the signs read: “Certified Backyard Habitat” with a drawing of a black, red and white spotted towhee sitting on a leafy branch.