Cetti’s warblers are insectivorous and prefer soft bodied insects and larvae. They are mostly found in thick vegetation which is close to water, such as reeds, bamboo, willow and thick bushes, basically, anywhere they can't be photographed. Egg laying occurs in June, in an untidy cup shaped nest made of leaves and stems and lined with hair and feathers. The nest is built entirely by the female, who lays 4 to 5 eggs. She also incubates them herself, but the male does chip in by feeding her during the incubation period. 

These photos were taken before sunrise, at our weir. I was waiting for a kingfisher and listening to the warbler when it decided to pop out of the undergrowth.