For those unfamiliar with the BioBlitz concept the idea is that scientists and the public descend en masse on a given area and identify as many species as possible. This event was organised by OPAL and was paqrt of BBC Springwatch's Wild Day Out festival.
Scientists from the Natural History Museum were there to identify species that other people had found, and lots of national and local wildlife charities and projects had interesting stands.
We found lots of species of beetle (hardly surprisng given we had Max and Conrad with us), hundreds of grasshopper nymphs, several damselflies and the odd newt.
There are some more photographs in my Flick set: Alexandra Palace BioBlitz