Gray cockatiel with yellow crest near Woodstock

I lost my gray cockatiel yesterday around 3pm near the Woodstock village square on Tinker Street. He’s about 12 inches from beak to tail, gray body with a bright yellow crest and orange cheeks; a single wing feather has a small white patch, and there’s a tiny gold leg band with '26' engraved. The feathers got ruffled after the wind; it's clear he’s been outdoors. I adopted him last year; he was a gift from my late aunt and has sentimental value for my kid and me. If you see him, please reach out. He’s friendly and responds to 'Polly'.