Plagiothecium moss
- Group
- Mosses
- Records since 2000
- 107
- Scientific name
- Plagiothecium laetum
B÷kman's Dandelion
- Group
- Flowering plants
- Records since 2000
- 106
- Scientific name
- Taraxacum boekmanii
Dermestes murinus
- Group
- Beetles
- Records since 2000
- 106
- Peak month
- April
Oblong-leaved Dandelion
- Group
- Flowering plants
- Records since 2000
- 106
- Scientific name
- Taraxacum oblongatum
Didier's tulip
- Group
- Flowering plants
- Records since 2000
- 105
- Scientific name
- Tulipa gesneriana
Diura bicaudata
- Group
- Stoneflies
- Records since 2000
- 105
- Peak month
- April
Pareurythoe borealis
- Group
- Worms (annelids)
- Records since 2000
- 105
- Peak month
- April
Psammothidium grishunum
- Group
- Seaweeds and algae
- Records since 2000
- 105
- Peak month
- April
Bacidina arnoldiana
- Group
- Lichens
- Records since 2000
- 104
- Peak month
- April
Barracudina
- Group
- Fish
- Records since 2000
- 104
- Scientific name
- Arctozenus risso
Cricotopus triannulatus
- Group
- True flies
- Records since 2000
- 104
- Peak month
- April
Paraphaenocladius exagitans
- Group
- True flies
- Records since 2000
- 104
- Peak month
- April
Caricea alma
- Group
- True flies
- Records since 2000
- 103
- Peak month
- April
Pyrus salicifolia
- Group
- Flowering plants
- Records since 2000
- 103
- Peak month
- April
Chiloe Wigeon
- Group
- Birds
- Records since 2000
- 102
- Scientific name
- Mareca sibilatrix
Fringed Hoar-moss
- Group
- Mosses
- Records since 2000
- 102
- Scientific name
- Hedwigia ciliata
Neoleria ruficauda
- Group
- True flies
- Records since 2000
- 102
- Peak month
- April
Phenacolimax major
- Group
- Molluscs
- Records since 2000
- 102
- Peak month
- April
Scarce Prominent
- Group
- Butterflies and moths
- Records since 2000
- 102
- Scientific name
- Odontosia carmelita
Dolerus haematodes
- Group
- Bees, wasps and ants
- Records since 2000
- 101
- Peak month
- April
Harmothoe spinifera
- Group
- Worms (annelids)
- Records since 2000
- 101
- Peak month
- April
Navicula slesvicensis
- Group
- Seaweeds and algae
- Records since 2000
- 101
- Peak month
- April
Hoary Grimmia
- Group
- Mosses
- Records since 2000
- 100
- Scientific name
- Grimmia laevigata
Old Growth Rag lichen
- Group
- Lichens
- Records since 2000
- 100
- Scientific name
- Platismatia norvegica
Xylodon raduloides
- Group
- Fungi
- Records since 2000
- 100
- Peak month
- April
Apatania wallengreni
- Group
- Caddisflies
- Records since 2000
- 99
- Peak month
- April
Diastrophus rubi
- Group
- Bees, wasps and ants
- Records since 2000
- 99
- Peak month
- April
Eusyllis assimilis
- Group
- Worms (annelids)
- Records since 2000
- 99
- Peak month
- April
Lasioglossum pauperatum
- Group
- Bees, wasps and ants
- Records since 2000
- 99
- Peak month
- April
Wisconsin weeping willow
- Group
- Flowering plants
- Records since 2000
- 99
- Scientific name
- Salix pendulina
Eumida maia
- Group
- Worms (annelids)
- Records since 2000
- 98
- Peak month
- April
Synedra oxyrhynchus
- Group
- Seaweeds and algae
- Records since 2000
- 98
- Peak month
- April
Killdeer
- Group
- Birds
- Records since 2000
- 97
- Scientific name
- Charadrius vociferus
Nitzschia closterium
- Group
- Seaweeds and algae
- Records since 2000
- 97
- Peak month
- April
Rosellinia mammiformis
- Group
- Fungi
- Records since 2000
- 97
- Peak month
- April
Disciotis venosa
- Group
- Fungi
- Records since 2000
- 96
- Peak month
- April
Opatrum sabulosum
- Group
- Beetles
- Records since 2000
- 96
- Peak month
- April
Three-lobed Crowfoot
- Group
- Flowering plants
- Records since 2000
- 96
- Scientific name
- Ranunculus tripartitus
Viburnum davidi
- Group
- Flowering plants
- Records since 2000
- 96
- Peak month
- April
Chinese barberry
- Group
- Flowering plants
- Records since 2000
- 95
- Scientific name
- Berberis julianae
White-marked
- Group
- Butterflies and moths
- Records since 2000
- 95
- Scientific name
- Cerastis leucographa
A Lichen
- Group
- Lichens
- Records since 2000
- 94
- Scientific name
- Hypotrachyna endochlora
A Lichen
- Group
- Lichens
- Records since 2000
- 94
- Scientific name
- Micarea synotheoides
Caricea pallipalpis
- Group
- True flies
- Records since 2000
- 94
- Peak month
- April
Gammarella fucicola
- Group
- Crustaceans
- Records since 2000
- 94
- Peak month
- April
Asymmetrical Hook-lobed Dandelion
- Group
- Flowering plants
- Records since 2000
- 93
- Scientific name
- Taraxacum hamatiforme
Dark-green Dandelion
- Group
- Flowering plants
- Records since 2000
- 93
- Scientific name
- Taraxacum bracteatum
Vinca difformis
- Group
- Flowering plants
- Records since 2000
- 93
- Peak month
- April