Gray cockatiel with yellow crest and orange cheeks

I lost my gray cockatiel yesterday around 3pm. He’s a small bird with a bright yellow crest, orange cheeks, white wing bars, and he wears a silver leg band with 'T1' on it, plus a slightly frayed left wing feather. Last seen perched on the balcony railing outside my apartment near Ellsworth Ave and Walnut Street in Shadyside, Pittsburgh. He’s really gentle and a big part of the family; it was a gift from my grandma, so it means a lot to me. If you’ve seen him, please email [email protected].