I bet you've all been on tenterhooks waiting for the final results of my amazing and crucial Common Gull Winter Counts. I did counts over the whole winter period because hardly any Common Gulls turned up in my little patch the previous winter. But this winter they certainly got back to their previous levels. So ...here they are in super-graphical-format ..... amazingly consistent, surprisingly. The counts over the last few weeks have all registered no Common gulls at all, so this is it for the 2018-19 winter. The number of Common Gulls is on the vertical axis, and the total number of all gulls present is on the horizontal axis. The most obvious thing about it is the almost perfect correlation between the two. Which, as I have mentioned earlier, was a surprise to me. I have also shared my thoughts about the "mechanism" that could make that happen. When the total flock size was ‹ 300, there would be ‹10 Commons. With a total flock size between 350 and 450, there would be 10-20 Commons. When the total flock was › 450, Commons reached 36-42. I haven't calculated the correlation coefficient, but it must be pretty high! Here's the link to what I wrote about it earlier on in the counts .... 297-common-gull-counts-update.html It's very illuminating .. especially if you print it out and set fire to it . Anyway, away with all this Stodgy Statistical Stuff .. let's have a lovely song........ and here's a words video so you can sing along if you should so wish ...
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AuthorThat's the author up there ... I was young and sprightly then. Archives
October 2022
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