The grass patch on which Hitomi sits is a single Bryce tree made after slepalex's fashion (see comments for this image http://www.bryce5.com/details.php?image_id=5294) and the birch trees are only one, twenty time instanced. The sea turtles are from DAZ 3D and the Eurolink from the Google Warehouse. Ambient light and clouds from my Marmorera_SD HDRI, the key light is from the sun.
The ducks took off because they got scared by the noise of the train. That's why Hitomi looks in the sky and no ducks are visible in the image.