Flag Fen - Peterborough Archaeology

Subalpine Fens - Colorado Native Plant Society

The Fen – Sage Mountain Botanical Sanctuary

High Creek Fen Preserve The Nature Conservancy in Colorado

Fen (Earth-616), Marvel Database

Ives Road Fen Preserve The Nature Conservancy in Michigan

Ouse Fen

Lowland fen The Wildlife Trusts

What is the Difference Between A Marsh, Swamp, Bog and Fen? - Ponder Weasel

Wicken Fen Vision, Cambridgeshire

Frontiers The challenge of developing ecohydrological metrics for vegetation communities in calcareous fen wetland systems