Cockatiel with yellow crest and orange cheeks

I lost my pet cockatiel, Sunny, yesterday around 3pm. He's a gray cockatiel with a bright yellow crest and orange cheek patches, about the size of a fist, with a silver leg band on his right leg labeled A12 and a small blue tail feather that sticks out. I last saw him near the Ithaca Commons on Green Street, around the Ithaca Bakery, and I’m pretty sure he wandered toward Cass Park by Cayuga Lake. His feathers are a bit ruffled after flight, but otherwise he's in good shape. He’s incredibly affectionate and brightens my days; losing him has me worried and heartbroken—he’s more than just a bird, he’s family. If you spot him, please message me; I’ll come right away with his favorite sunflower seeds and a travel cage.