Where have all the Grassoppers gone?

[Refugee]

About 12 years ago I lived down south and there was a wilded over land fill site. The grass hoppers used to make a right racket when they were in season.
I would guess that the birds have had them all round here though.
I spotted a hornet about 3 or 4 weeks ago and now many more wasps that I have seen for quite a few years.