Andrew, thanks for finding the explanation that was escaping me last night - and for the background. What I meant was that anyone at Dawlish next Saturday owning up to a list smaller then 20 would hardly be referring to birds (unless they are on their first birding outing, which isn't very likely). I could pretty safely assume they are referring to the number of BF members they've seen. So QED, that's that, now I have what I want, or Bob's your uncle.