close up shot of Dusky Moorhen, Gallinula tenebrosa finding and feeding food on grass near lake

water hen species dusky moorhen bird swimming green tide dusky moorhen feeding algal bloom gallinula tenebrosa bird feeding green tide australia water bird birds eat water plants water pollution australia lake bird wetland green water dark grey black water bird tidegreen new guinea bird australia pond birds on green tide green tide australia bird green lake algal indonesia bird australia wildlife water contamination australia black bird bright red beak bird feeding green plants bird swamps australia lake galinula tenebrosa feeding red facial bird plant material black bird finding food canary yellow tip australia river australia park tide reddish orange park lawns mj videography