I just totally admire Mr Darwin so I suppose this clue was right up my street .
I'm truly humbled by your accolades .
I just saw the ch alluding to finch and the rw which suggested wren and seemed to recall something about classifying birds on his epic voyage , the rest took about 2 hours !
Now I've got 3 problems
- get a better word
- give a better prize
- how can I possibly judge you improbably clever people
thanks once again and see you next week