Fun, I thought. The PDM came with trying to figure out how to complete the unches in the thematic entries and was confirmed by the question and disturbance. Thank you, Cranberry.
As well as the bird I didn’t find either 27 or 32d in Chambers. 27 is in Collins and 32 is in a compilation of Ed’s coinages. (What would setters do without him? You could readily convince yourself that his entire oeuvre was created solely to help later generations resolve difficult letter combinations!)