black heade gull standing in the marsh, with reflection in the water - chroicocephalus ridibundus)

wing wildlife wetlands wetland waves wave waterfowl waterbird water undefined standing shorebird shore seabird sea ripplig ripples ripple ridibundus reserve reflections reflection nature mudflat mirror marsh heron heade gull ghent flanders enviornment ecology chroicocephalus bourgoyen black birds bird belgium behaviour beak animal coast