Northamptonshire — county
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 20,226
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 19,854
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 19,787
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 19,779
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 19,515
- Group
- Birds
- Peak month
- January
- Records since 2000
- 19,363
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 19,098
- Group
- Butterflies and moths
- Peak month
- July
- Records since 2000
- 18,902
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 18,728
- Group
- Caddisflies
- Peak month
- September
- Records since 2000
- 18,706
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 18,559
- Group
- Mosses
- Peak month
- November
- Records since 2000
- 18,165
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 18,107
- Group
- Fish
- Peak month
- July
- Records since 2000
- 18,003
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 17,871
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 17,847
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 17,587
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 17,510
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 17,492
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 17,452
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 17,406
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 17,320
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 17,196
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 17,033
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 16,885
- Group
- Grasshoppers and crickets
- Peak month
- July
- Records since 2000
- 16,828
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 16,693
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 16,569
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 16,478
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 16,456
- Group
- Birds
- Peak month
- January
- Records since 2000
- 16,291
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 16,208
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 16,087
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 16,059
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 15,904
- Group
- Dragonflies and damselflies
- Peak month
- September
- Records since 2000
- 15,887
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 15,831
- Group
- Dragonflies and damselflies
- Peak month
- June
- Records since 2000
- 15,819
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 15,749
- Group
- Bees, wasps and ants
- Peak month
- April
- Records since 2000
- 15,558
- Group
- Mammals
- Peak month
- October
- Records since 2000
- 15,521
- Group
- True flies
- Peak month
- April
- Records since 2000
- 15,504
- Group
- Dragonflies and damselflies
- Peak month
- August
- Records since 2000
- 15,356
- Group
- True flies
- Peak month
- August
- Records since 2000
- 15,338
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 15,205
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 15,030
- Group
- Grasshoppers and crickets
- Peak month
- July
- Records since 2000
- 14,752
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 14,679