In June 2022 members of the public joined naturalists, both professional and amateur, to conduct a Bio Blitz of the Denis’ Field site. 
A Bio Blitz is a biological survey, usually conducted in one day, as an attempt to record all the living species within a designated area.
The Denis’ Field Bio Blitz is now an annual event.
Year dates in brackets indicate the first year that the species was seen at the site during an annual bioblitz.  If there is no date, this shows that the species was first recorded at the site during our first Bio Blitz in 2022. 
The dates of the Bio Blitz so far are:
4th June 2022
​9th July 2023
​21 June 2024
​31 May 2025
All images courtesy of Jennie Smith.
Flowering Plants
Bittercress (2023)
Bluebell
Bramble
Broad Leaf Dock
Broadleaved Willow herb
Buddleia
Bush Vetch
Camomile (2023)
Chickweed
Cleavers
Comfrey (2025)
Crocosmia
Columbine
Common Daisy
Common Groundsel
Common Nettle
Common Ragwort
Corn Cockle
Cow Parsley
Creeping Buttercup
Creeping Thistle (2024)
Dandelion
Dusky Cranesbill
Foxglove (2023)
French Cranesbill
Fringe Cups
Garlic Mustard
Great Willow herb
Greater Plantain
Green Alkanet
Hedge Honeysuckle
Herb Bennett
Herb Robert
Himalayan Balsam
Himalayan Honeysuckle
Ivy
Ivy Leaved Speedwell (2024)
Japanese Knotweed
Jerusalem Artichokes (2024)
Lady's Smock (Cuckoo Flower) (2024)
Land Cress (2024)
Lesser Celandine
Meadow Buttercup
Nipplewort (2023)
Orange Hawkweed (2024)
Ox Eye Daisy (2023)
Phacelia
Pineapple Mayweed
Purple Toadflax (2025)
Ragwort (2023)
Red Campion
Rosebay Willow herb
Russian Comfrey (2023)
Shepherd’s Purse
Slender Speedwell (2025)
Sorrel
Stonecrop
Three Cornered Garlic
Wall Lettuce
Wavy Bittercress
​Wild Garlic (Rensoms) (2025)
White Clover
Wood Avens
Wood Forget Me Not
Yellow Loosestrife
​Fungi
Crumble Cap Mushroom (2023)
King Alfred’s Cakes (2023)
Trees
Apple / Plum / Pear – Orchard Area
Ash
Beech (2023)
Bird Cherry
Cherry (edible) (2025)
Crab apple (2025)
Damson (2025)
Elder
Elm
Goat Willow
Hawthorn
Holly
Hornbeam
Horse Chestnut
Large Leafed Lime
Medlar (2025)
Red Dogwood
​Red Horse Chestnut (2025)
Rowan
Sessile Oak
Silver Birch
Turkey Oak
​Willow - Salix Viminalis (2024)
Gras​ses
Annual Meadow Grass
Cocks Foot
Common Bent Grass (2023)
False Oak Grass
Knot Grass
Meadow Foxtail
Pendulous Sedge
Rough Meadow Grass
Reed Canary Grass
Rye Grass (2023)
Yorkshire Fog
Ferns
Lady Fern
Male Fern
Broad Bladder Fern
​​Birds
Blackbird
Blackcap (2025) [Birdsong app]
​Blue Tit (2023)
Carrion Crow (2023)
Chiff Chaff (2024)
Coal Tit (2023)
Dunnock (2025) [Birdsong app]
Feral Pigeon (2023)
Goldfinch (2023)
Great Tit (2023)
Greenfinch (2025)
Green Woodpecker (heard) (2023)
House Martin (2023)
Jackdaw (2023)
Magpie (2025)
Robin (2023)
Song Thrush (2024)
Swift (2023)
Tawny Owl (calling in evening) (2023)
Wood Pigeon
Wren (2023)
Invertebrates
18 Spot Ladybird (2023)
Aphid (2025)
Bee Imitating Hoverfly
Blow Fly
Blue Leaf Beetle
Brown Short Horned Grasshopper (2023)
Candy Striped Spider (2023)
Chloromyia fly (2024)
Click beetle - Agriotes (2025)
Coelichnemon fly (2024)
Common Carder Bee
Common Carder Bumblebee (2023)
Common Red Soldier Beetle (2023)
Common Wasp (2023)
Crane fly - small (2025)
Cuckoo Spit
Dance Fly (2023)
Dock Beetle (pregnant)
Flesh Fly (2023)
Forest Bug (2023)
Froghopper
Garden Bumblebee
Golden Tailed Leaf Walker
Ground beetle - Carabus (2025)
Hoverfly (2024)
Hoverfly larvae (2025)
​Green Bottle fly (2024)
Green Dock Beetle (2023)
Green Shield Bug (2023)
Greenfly (2023)
Harlequin Ladybird (2023)
Harvestman (2023)
Honey Bee (Italian)
Hoverfly (2023)
Lacewing (2025)
Ladybird Larvae
Large White Butterfly (2023)
Meadow Brown Butterfly (2023)
Millipede (2023)
Nettle Weevils (mating)
Nursery Web Spider (2023)
Parasitic Wasp (2023)
Pardosa Wolf Spider with Egg Case (2024)
Peacock butterfly (2025)
Plant Bug (Leptuptema Dolabrata)
Plant Bug (Notostira Elongata) (2025)
Red Admiral Butterfly (2023)
​Ringed Snake Milipede (2025)
Ringlet Butterfly (2023)
Rough Haired Lagria Beetle (2023)
Saint Mark’s Fly
Seven Spot Ladybird
Silver Fish (2023)
Silver Y Moth (2023)
Slug (2023)
Small Black Soldier Beetle (2024)
Small Tortoiseshell Butterfly (2023)
Small White Butterfly (2023)
Speckled Wood Butterfly (2023)
Tree Bumble Bee
White Lipped Snail (2023)
White Tailed Bumblebee (2023)
Woodlouse (2023)
Worm (2023)
Yellow Ladybird
Yellow Snail (2023)
Yellow Underwing Moth (2023)
Mammals
Brown Rat
Mole Hills (fresh)