Elegant Silk-moss
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 11,892
Species recorded in Essex
1,113 species
Essex — county
Water Pipit
- Group
- Birds
- Peak month
- January
- Records since 2000
- 11,870
Endive Pellia
- Group
- Liverworts
- Peak month
- September
- Records since 2000
- 11,837
Lesser Yellow Underwing
- Group
- Butterflies and moths
- Peak month
- September
- Records since 2000
- 11,818
White-winged Scoter
- Group
- Birds
- Peak month
- January
- Records since 2000
- 11,818
Brown rat
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 11,756
Eared Grebe
- Group
- Birds
- Peak month
- January
- Records since 2000
- 11,738
Common Flower Fly
- Group
- True flies
- Peak month
- July
- Records since 2000
- 11,730
Crested Dog's-tail
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 11,688
Thickpoint Grimmia
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 11,680
Catworm
- Group
- Worms (annelids)
- Peak month
- June
- Records since 2000
- 11,643
Lesser Pocket-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 11,582
Rough Meadow-grass
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 11,534
Prickly Sow-thistle
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 11,523
Volucella pellucens
- Group
- True flies
- Peak month
- June
- Records since 2000
- 11,473
Male-fern
- Group
- Ferns and horsetails
- Peak month
- May
- Records since 2000
- 11,400
Water Mint
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 11,367
Canada yew
- Group
- Conifers
- Peak month
- April
- Records since 2000
- 11,357
Creeping Cinquefoil
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 11,337
Agapetus fuscipes
- Group
- Caddisflies
- Peak month
- April
- Records since 2000
- 11,335
Pyramidal Orchid
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 11,220
Smew
- Group
- Birds
- Peak month
- January
- Records since 2000
- 11,187
Supine Plait-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 11,134
Colt's-foot
- Group
- Flowering plants
- Peak month
- March
- Records since 2000
- 11,051
Common Green Grasshopper
- Group
- Grasshoppers and crickets
- Peak month
- July
- Records since 2000
- 11,050
Narrowleaf Vetch
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 11,032
Dotted Thyme-moss
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 11,029
Pineapple Weed
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 11,025
Hemp-agrimony
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 10,961
Tufted Vetch
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 10,953
Even Scalewort
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 10,931
Slipper Limpet, Slipper shell, Oyster-pest, Common Atlantic slippersnail
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 10,927
Grey Field Slug
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 10,855
Gymnometriocnemus brumalis
- Group
- True flies
- Peak month
- December
- Records since 2000
- 10,852
Ivy Bee
- Group
- Bees, wasps and ants
- Peak month
- September
- Records since 2000
- 10,833
Wild Teasel
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 10,799
Common Wasp, Common yellow jacket
- Group
- Bees, wasps and ants
- Peak month
- August
- Records since 2000
- 10,694
Variable-leaved Crestwort
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 10,676
Blueish Veilwort
- Group
- Liverworts
- Peak month
- March
- Records since 2000
- 10,650
Mamillate Plait-moss
- Group
- Mosses
- Peak month
- April
- Records since 2000
- 10,616
Mugwort
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 10,551
Wood-sorrel
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 10,549
Cut-leaved Crane's-bill
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 10,545
Black Medick
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 10,508
Hammered Shield Lichen
- Group
- Lichens
- Peak month
- April
- Records since 2000
- 10,481
Wild Cherry
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 10,464
Curled Dock
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 10,374
Bugle
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 10,367