Snettisham and Dersingham, 13 September 2021
We arrived at Snettisham an hour before high tide and parked up on the sea bank overlooking The Wash. The tide was coming in quickly – The Wash has the greatest tidal range of any east coast estuary at 6.5m during spring tides – and there was a constant movement of wading birds in front of us as the mudflats were covered by the incoming tide.
|Swirling waders, Snettisham.|
|Swirling waders, again.|
|More swirling waders.|
|Mixed wader flock, Snettisham.|
We briefly crossed the causeway
across one of the pits to look for a special plant. Red hemp-nettle was
formerly a common arable wild flower in southern Britain but is now critically
endangered. In Norfolk, it is only found at Snettisham growing in areas of
disturbed shingle. We were fortunate to find several plants still in flower,
along with some very stunted wild carrot.
We then walked down the footpath to Shore Hide where there were seven spotted redshanks on an island in the lagoon along with several cormorants, little egret and a singe female pintail. On the approach to the hide there was a single common blue butterfly.
After a short walk through the fringing pine and birch woodland where a chiffchaff was singing, we stopped at the John Denver Memorial Bench for a quick blast of Annie’s Song. It was a bit of a mystery why there is a bench celebrating the life of John Denver at Dersingham as there is no record of him ever having visited the site! However I’m sure he would have approved as it gives a spectacular view across Dersingham Bog National Nature Reserve, the largest intact lowland acid bog in East Anglia. Although part of the Sandringham Estate, the reserve is managed by Natural England.
Our target species here was the black darter dragonfly, a specialist of acid bog habitats. Black darter is a common species in northern upland moors and peat bogs but very restricted in Norfolk where it is only found at a handful of sites.
|Autumnal bog asphodel, Dersingham.|
We walked out into the bog on the boardwalk where we saw the orangey-brown fruiting stems of bog asphodel, the red berries of cranberry and round-leaved sundew. Black darter was however conspicuous by its absence until we had almost completed our loop of the boardwalk when Ann spotted two dragonflies on the boardwalk in front of her. One was a male common darter but the other was our prize - a male black darter! It gave good views to everyone before flying off and was lost to view.
|Black darter.|Common lizard, Dersingham.
Birds were very much the supporting cast at Dersingham. A family of buzzards called over some adjacent woodland and on the bog itself were kestrel, green woodpecker and three stonechats.
Hoof fungus, Dersingham, a species featured in Norfolk's Wonderful 150.
As we carried on around the heathland loop we saw a small copper butterfly nectaring on heather, hoof fungus growing on a birch tree and several knopper oak galls on acorns.