Hummingbirds, honeyeaters and sunbirds are the best known bird pollinators, but they represent just three of at least 74 different bird families that visit flowers. Unfamiliar examples include woodpeckers, pigeons and doves, corvids, and warblers. In this talk, Jeff Ollerton will discuss his new book "Birds & Flowers: An Intimate 50 Million Year Relationship" and explore the ecology and evolution of flower pollination by birds.

The Cotswold Water Park is an area of extensive gravel pits interspersed by woodlands and fields and should provide us with a good range of species. The Waterhay car park (charges apply) is the meet-up point at 09:30. This car park is roughly halfway between Ashton Keynes and Leigh along a road called Waterhay;