This appears to be the authentic Twitter avatar of a man named Alexander Allan, who, as head of Britain's Joint Intelligence Committee, is that nation's spy chief. (The job is analogous to the Director of National Intelligence.) He's lived a fascinating, tragic, and mystery-filled life. And he's a Deadhead, to boot.
A government facility outside of Denver houses more than a million products of the illegal wildlife trade, from tigers and bears to bald eagles.