Late report, I went out again last Saturday. Heard the Kingfisher calling along the Bourn Brook. I think that's 9 times now.
Last Sunday, struggled to find the River Rea Kingfisher at Ten Acres. In the end it was closer to Canon Hill Park.
Not sure if it's been a successful summer at this spot, I saw a pair early in the year, then they disappeared. Then one hung around, then disappeared, then there was a pair a few times. But never in one area.
I think the Kings Norton pair might have been successful.