Dr Irina Tatarenko from the Floodplain Meadows Partnership recently presented a talk on snake's-head fritillaries for BBOWT volunteers.
The talk discussed how an enigmatic plant species 'Snake's-head fritillary' is very successful in English floodplain meadows because of its seasonal growth, pollination and reproduction strategies. The population changes at a site along the Thames are described using an extensive dataset collected through a long-term monitoring project with volunteers.
You can watch the talk here:
https://www.youtube.com/watch?v=AdcYunXsSvA&list=PLHXOBlK7n-3M&index=1