Barn swallow on it's nest

Barn swallow on its nest in the birds observation hut, rearranging a twig. Photo made at nature reserve Hellegatsplaten, located on the Volkerak and south of the Hellegatsdam. Goeree-Overflakkee, South-Holland, the Netherlands.
*These nest photo's are made from a safe distance and without flash, with respect and care to not disturb the birds too long.