Grey cockatiel with yellow crest, orange cheeks

I lost my grey cockatiel this past evening. It's about 12 inches long from beak to tail, with a bright yellow crest and orange cheeks, and a small blue leg band with the code GZ-12. It has a mostly grey body with a lighter underside and a few ruffled feathers on the chest from molting. I last saw him yesterday around 7pm near Nugget Market on Main Street in Grass Valley; he looks skittish around strangers but is very tame with me and will respond to 'Skye' if prompted. This bird is really special to me—it's a gift from my grandmother, so I’m really hoping to find him soon. If you spot him, please reach out.