[CRYPTOGRAPHY] /prog/ challenge

http://www.gchq.gov.uk/Press/Pages/Pigeon-takes-secret-message-to-the-grave.aspx

Solve it!

Some things Reddit seems to be having trouble figuring out:
* The fact that it says ``2'' under ``Number of copies sent.'' and the fact that there are two pigeon ID numbers may be related.
* It says ``100'' at the top, not ``110''.