Death by cloaca

Seeing as I'd made the effort to find and clean my old scope, seemed a good idea to take it out and see if it actually still worked (having been stuffed in either the car boot or garden shed for 3 years). Nipped over the Swithland Res. during my lunch break. Nothing overly exciting - just as I remember general birding at SwR (with notable exceptions!). 100+ Greylags loitering around the causeway - presume these are responsible for the mountain of shite on the top of the wall. Had a quick look along there and seems possible that the resident colony of the Psychid moth Luffia ferchaultella has been obliterated by the massed geese cloacas.