tringa nebularia `perna-verde-comum` looking for food in cavado estuary.

animal animals avian beak beautiful bird birdlife birds birdwatching brown cavado color common esposende estuary europe fauna feather food for green greenshank lake looking mud nature nebularia ornithology outdoor pernaverdecomum plumage portugal reflection river sandpiper sea shore shorebird tringa wader water waterbird wetland white wild wildlife