7. Speckled wood: 53,423 sightings
The number of speckled wood butterflies, with their distinctive yellow specks, has seen a similar number of sightings compared with last year, but has seen a decrease in the overall population by 35% in the past 15 years. Unlike most other butterflies, the speckled wood does not feed on flowers but on honeydew from trees.
Photograph: Butterfly Conservation