Sand Martin Fledgling Close Up

I have spent three days this week visiting the OlympicPark in London and have thoroughly enjoyed the experience....in particular looking beyond the new infrastructure and noticing the minutiae of the landscape that seem to pass unnoticed by the majority of people. Alongside the river Lea there were numerous sand martins feeding, some of whom had taken advantage of artificial holes in the concrete bank as nesting sites. They are not rare birds - more 'scarce' - but to see them feeding in such an urban location was new for me and a real treat.