This Autumn

I'm not sure you can get away with calling the Nikkei "yellow"

If you can remove a couple of "with the" and "from"s, I think this would be stronger instantly.  Just the repeated motifs of trees and fish are enough for continuity.  Then, of course, you bring in a squirrel and I'm not sure he fits well -- it seems like an easy pun rather than a contrast at all.  (Then again, I suppose there aren't a lot of fish choices -- Ruddy 'ard kippering... )  I appreciate that you use "holed up" and "fallen fruit", I just don't think the last stanza ties it all up with the shift in metaphorical elements.

On a side note, my "inlaws" have been wanting to emigrate (who'd want to stay in Britain these days?) but since our economy is relatively stable and theirs is -- well, it's shite -- they've realised that they're not going to be able to afford it for at least five years now.  Depressing times when everything's tied up in a house you're probably not going to be able to sell.