How St Kilda breakwater penguins were mapped to the metre

A.6.3. R.1.5. Zc.5.1. On a volunteer’s data sheet, those few characters told anyone reading it exactly where a penguin had been found on the St Kilda breakwater, usually to within about a metre. They look a bit like spreadsheet cell references. In a way, that’s what they are. The system behind them is one of […]

