Constanta/Belgrade - The lady in orange lowered her camera - "We've come too late," she sighed.
It was 8.30 am on a bright morning in the Danube delta, the sunshine already so hot that the birds - pelicans, great white egrets and spoonbills - crouched in the shade and were hard to photograph. They took flight only when the wash from the boat threatened to swamp their resting places.
Before emptying into the Black Sea, the Danube River branches into an enchanting wetland of lakes, streams and channels where reed belts, water-lily ponds and sand dunes alternate with woods. A UNESCO World Cultural Heritage site, the Danube delta has been declared a "biosphere reservation" by the United Nations' cultural body.