Without the Oystercatchers, the counts would be close to zero

The NW and W winds have kicked in on the last two days. The result: only a few Oystercatchers and less than 400 waders in total. I'm taking advantage of the poor migration to make some progress on the analysis of the waders data we have collected since 1963. This year, the migration seems to be starting earlier than usual, and that's not necessarily a good sign. My first aim in the analysis was to calculate some mooving means on the counts, focusing on the age of the birds, to see when the juveniles start to migrate. Below, an example for the Dunlin population, in 2023.