The day was on the cool side and rather breezy, but thankfully dry. It was the breeze that made me plump for Byfield Pool, guessing that the tree cover would make conditions calmer. The down side was that the limited sunshine was barely able to penetrate to the ground.
We approached the pool via the retaining wall of Boddington Reservoir, where Winter Cress, Barbarea vulgaris, was in bloom.
|Winter Cress growing beside Boddington Reservoir. 30 April, 2017|
The plant was once called Herb St Barbara, explaining the Latin name for the genus. It is frequent beside streams throughout Northamptonshire.
It is that time of the year when the St Mark's Fly, Bibio marci, comes to our attention. The adults generally appear around St Mark's Day, 25 April, but with climate warming (Fake news!) the species would make a good subject for phenological studies.
A male St Mark's Fly at Byfield Pool. 30 April, 2017.
Note the apparent fuzziness of the eyes caused by the presence of long hairs.