Yellow cockatiel with gray wings, leg band

I found a yellow cockatiel this afternoon around 4pm in Buffalo, NY, near the Elmwood Village bakery on Bidwell Parkway. It's a medium bird, bright yellow with gray wings and a white face, about the size of a small pigeon, and it has a tiny red leg band marked with 'A12'. The bird seemed a bit stressed but curious, and I kept a gentle hold while I looked for an owner nearby. I brought it to the Buffalo Humane Society as a safe step, but I wanted to post here in case the owner recognizes it by the leg band. If it's yours, describe the leg band number and any unique marks, like a blue feather on the tail.