Solutions wetland area has 6 entries with similar clues

• 4-letter words
• fensSomewhat defensive of wetlands
• bogswetland areas
• rushGrasslike wetland plant
• 5-letter words
• egretWhite wetland wader
• 6-letter words
• swampsdid butterfly perhaps pass empty wetlands?
• 9-letter words
• diffusionFlow from an area of high concentration to an area of low concentration