bird birds dusky moorhen fauna feeding gallinula tenebrosa grass grassed area lakeside moorhen strong legged wader water water bird wetlands bird beak breeds comb domestic farm feather forage fowl Great Britain hen hens natural nature rural uk united kingdom wiltshire bridleway England english exercise fence field footpath green landscape path peace Sussex track Trek walk clouds countryside hill hillside meadow sky South Downs summer woodland blue distance distant spring trees view Weald Ammophila coast coastal coastline colonist Cornish cornwall dune habitat marram plant sand shore stabilise dunes