So the Wirral Way has been renamed. It has to be Chiffchaff Alley. Ther are so many of them it is as if they are stalking you as you wander the hedgerows.
I have developed a real soft spot for them over the last couple of weeks. On my morning and evening commutes along the old railway line they seem to have become one of the fixtures and fittings. If you can't see one flitting along the sprouting branches then you can usually hear one, metronomic but charming.
Brace yourselves, mathematics coming up!
I have counted 12 different singing birds between West Kirby and the Dungeon footpath. I have seen reports on the Dee Estuary website of 8 along the Heswall stretch and 9 between Parkgate and Neston. This is 29 birds over a combined distance of 9.5 miles. This equals 3.05 Chiffchaffs per mile. We have no data from Neston to Hooton where the Wirral Way terminates, but we can assume that as the habitat is fairly constant that there would be 3.05 birds per mile along this section, adding another 7.62 birds to the total.
This gives us a final total of 36.62 Chiffchaffs along the Wirral Way. We can round this up to 37 as encountering 0.62 of a Chiffchaff is a little unlikely!
I'll be back out in the morning, along Chiffchaff Alley.