The 10 or so days of hot weather near the end of July have allowed our butterfly numbers to make a recovery (for most species, anyway). There are still very few Common Blues, but the Short-tailed Blues are everywhere. Some of the Fritillary species just haven't put in an appearance (Glanville, Knapweed), whilst others are now very common (Silver-washed). This positive trend should continue, as August is traditionally the hottest month of the year.
In the Brenne and other damp habitats the extensive reedbeds will be flowering. Their beige plumes often form the backdrop to swallows hunting insects over the vegetation in the étangs once the crops in the fields have all been harvested and are no longer providing the prime hunting ground.
Warmth loving flies such as Hoverflies, Horseflies and Robberflies have been building up in July and will continue in good numbers this month. Don't automatically dismiss flies as something nasty - many of them are beautiful and interesting to watch. Hoverflies and Robberflies don't bite and only female Horseflies do. Watch out for mosquitoes though - the silent, black and white stripey Tiger Mosquitoes have been around for a couple of months, and they can carry flu-like diseases.
spring to mid-autumn.
If you are very lucky (I hope to be, later in the month with the Association de Botanique et Mycologie de Sainte-Maure-de-Touraine) you might see the very rare Violet Helleborine orchid this month in the Forest of Loches.