Lost small brown hamster with a white patch on head last seen in backyard in Bakersfield.

I last saw Mr. Nibbles in our backyard on Saturday afternoon. He's a small, brown hamster with a white patch on his head and loves to run around in his little wheel. We suspect he may have escaped through a small opening in the fence. If anyone has seen him or has any information, please reach out. He's very friendly and loved dearly by my kids!