Britain's rarest bird of prey spends the summer months breeding in the upland areas of Britain before heading south in autumn. It's likely that our native birds are also joined by harriers from continental Europe during the winter.
Males are a pale grey in colour, whilst females and young birds are brown with a white rump and barred tail, so they are often known as 'ringtails'.
The harriers roost overnight amongst the sedge on Sedge Fen. They can generally be seen towards dusk gliding over the fen looking for a safe place to roost.
A good place to see them from is from the Boardwalk, or from the warmth of the Visitor Centre.
Short eared owls