The term passenger pigeon is identified in base64 scheme by the sequence cGFzc2VuZ2VyIHBpZ2Vvbg==, while the MD5 signature is equal to 9b4fe9b9828a4ed26471315fa064f5c9. The ASCII encoding of passenger pigeon in hexadecimal notation is 70617373656e67657220706967656f6e.