This is a return visit — the first attempt was washed out by rain — and the diarist approaches from the opposite end, the seaward side, crossing the Teifi bridge and heading upstream past the ghost of Cardigan railway station. The structure is simple: a walk along a former railway line through reedbed, scrub, and tidal creek. The content is whatever the marsh decides to offer. The reedbeds deliver first. The sound of wind through reeds gets a precise description — 'ambient organic static' that rises and falls with enough force to mask the road noise beyond. At the margins, autumn fruits are catalogued with the practiced eye of someone who knows when blackberries are done and when sloes are ready for gin. This is phenological observation dressed as casual notice. The weasel is the set piece — a 'low blur of fur and legs' dashing across the path at the exact moment the sun breaks through. The timing reads as lucky rather than staged, and the diarist doesn't oversell it. More interesting is the upward glance that follows: the valley side showing early autumn colour among deciduous trees, with dead ash crowns standing skeletal among them. The ash dieback goes unnamed but unmistakable, a quiet ecological signal folded into landscape description. The tidal section is where the piece does its best work. The creek is draining — about an hour after high water — and the diarist watches dunlin working the exposed mud with their characteristic jerky probe-and-retreat feeding style, while ducks loaf nearby. The specificity is genuine: dunlin identification, tidal timing, behavioral distinction between species. This is field observation, not atmosphere. What the marsh withholds matters as much as what it gives. The kingfisher seen on the previous visit is absent. The heron the diarist wanted to photograph better doesn't appear. The closing repetition — 'Next time, perhaps. Next time' — is the thesis statement. Nature writing that admits to coming back empty-handed is more honest than nature writing that always finds its climax. The piece is an entry in the Guardian's long-running Country Diary series, now anthologised in Under the Changing Skies: The Best of the Guardian's Country Diary, 2018-2024. The form is constrained — roughly 400 words, one walk, one set of observations — and the constraint is the point. This is miniature work, and the craft lies in what's selected and sequenced within tight space. As nature writing, it sits comfortably in the tradition of close seasonal observation — Gilbert White by way of the newspaper column. It doesn't attempt the essay-length ambition of Robert Macfarlane or the political urgency of Isabella Tree. It's a field note that earns its keep through precision of eye and restraint of sentiment.