A sure sign that late summer is upon us when you dine al fresco and wasps come to join you. Wasps are omnivores. As well as scavenging they eat insects which they chew and feed to their carnivorous larvae. Moreover they are important 'accidental pollinators' by going from flower to flower drinking nectar and thereby distributing pollen. 

 Reportedly wasps numbers are down this year and I have seen very few thus far. They play an important part in the ecosystem so I was pleased to see this one as it shared my roast dinner.