It looks like...

A good summer for:

Bowlers in Leamington, since a green Amazonian parrot named Henry has been banned from the bowling green. The parrot, with its squawks of laughter and comments such as "You're a yard short, a yard short", had been irritating members and infuriating visiting teams.

A bad summer for:

Footballers, who have been shown, in a study in New York, to suffer from impaired mental skills through repeated heading of the ball. It does not say if the damage is permanent.