Garlic Mustard
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 35,141
Species recorded in Leeds
337 species
Leeds — county
Cleavers
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 35,139
Ash
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 35,025
Tapered Drone Fly
- Group
- True flies
- Peak month
- April
- Records since 2000
- 35,005
Sycamore [tree]
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 34,632
Gray Partridge
- Group
- Birds
- Peak month
- May
- Records since 2000
- 34,405
Dangling Swamp-lover
- Group
- True flies
- Peak month
- September
- Records since 2000
- 34,301
Arctic Tern
- Group
- Birds
- Peak month
- May
- Records since 2000
- 33,992
Bearded Reedling
- Group
- Birds
- Peak month
- May
- Records since 2000
- 33,456
Common frog
- Group
- Amphibians
- Peak month
- March
- Records since 2000
- 33,381
Hazel
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 33,120
Holly
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 32,893
Bee Fly
- Group
- True flies
- Peak month
- April
- Records since 2000
- 32,811
White-throated Dipper
- Group
- Birds
- Peak month
- May
- Records since 2000
- 32,318
Herb-Robert
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 31,116
Great Bittern
- Group
- Birds
- Peak month
- May
- Records since 2000
- 30,985
English ivy, Common ivy, European ivy, Ivy, Needlepoint ivy, Ripple ivy
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 30,860
Japanese Knotweed
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 30,167
Yorkshire-fog
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 29,834
Common Hawker
- Group
- Dragonflies and damselflies
- Peak month
- August
- Records since 2000
- 29,798
Cow Parsley
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 29,713
Osprey
- Group
- Birds
- Peak month
- August
- Records since 2000
- 28,915
Blackthorn
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 28,574
Cock's-foot
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 28,426
Whinchat
- Group
- Birds
- Peak month
- September
- Records since 2000
- 28,416
Red Campion
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 28,333
Little Owl
- Group
- Birds
- Peak month
- April
- Records since 2000
- 28,128
Selfheal
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 28,118
Two-spot Ladybird
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 28,081
Drone Fly
- Group
- True flies
- Peak month
- August
- Records since 2000
- 28,014
Meadowsweet
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 27,430
Cattle Egret
- Group
- Birds
- Peak month
- October
- Records since 2000
- 27,274
Giant Hogweed
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 27,203
Black Darter
- Group
- Dragonflies and damselflies
- Peak month
- August
- Records since 2000
- 26,741
Wood Avens
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 26,690
Beech
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 26,555
Cuckooflower
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 25,770
14-spotted Ladybird Beetle
- Group
- Beetles
- Peak month
- May
- Records since 2000
- 25,758
Cuckoo-spit Insect
- Group
- True bugs
- Peak month
- June
- Records since 2000
- 25,331
Small Garden Bumble Bee
- Group
- Bees, wasps and ants
- Peak month
- June
- Records since 2000
- 24,422
Ground-ivy
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 24,139
Great Willowherb
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 24,020
Garden Snail
- Group
- Molluscs
- Peak month
- June
- Records since 2000
- 23,914
Common Toad
- Group
- Amphibians
- Peak month
- March
- Records since 2000
- 23,841
Eurasian Woodcock
- Group
- Birds
- Peak month
- January
- Records since 2000
- 23,674
Short-eared Owl
- Group
- Birds
- Peak month
- January
- Records since 2000
- 23,364
Common Red Soldier Beetle
- Group
- Beetles
- Peak month
- July
- Records since 2000
- 23,196
Little Gull
- Group
- Birds
- Peak month
- April
- Records since 2000
- 23,156