SEPTEMBER 18 - 27, 2026
The Great Canadian Biobltiz
The CWF Great Canadian Bioblitz is a national event designed to provide nature enthusiasts with a fun and easy way to connect with nature — and take inventory of Canada’s wildlife species using iNaturalist. Bioblitz London will be hosting a variety of free guided nature walks around London to give participants the chance to explore nature in our area and learn from knowledgeable naturalists. No prior experience is required. Just download the iNaturalist app, create your free account and we can teach you how to use it.
Learn more about the Great Canadian Bioblitz HERE
Great Canadian Bioblitz
London Events
Join us on a group iNaturalist Bioblitz or on a Guided Nature Walk to learn about biodiversity in London from knowledgeable naturalists!
Guided Walks: Each of our walks are lead by passionate naturalists that will share their knowledge along the way. We will also take photos of the different species that we see and upload them onto iNaturalist.
Bioblitzes: During these events, our volunteers will show you how to explore an area to find all kinds of diversity that you never knew was all around you! These events are more focused on unstructured group exploring. We will make iNaturalist observations and share information about some of the interesting species that we find along the way.
All of our events are for everybody - no prior knowledge or experience is required!
Please download iNaturalist in advance and create your account to be ready to participate.
We will have helpers 15 minutes early for each event so if you would like help getting started then arrive early and we are happy to show you how to use the app!
Saturday Sept 19th
Master the Aster
Guided Flower Identification Walk
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Hosted by Payton Landsborough from Thames Talbot Land Trust
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10:00AM - 1:00PM
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Westminster Ponds Centre
Concrete to Canopy
Guided Tree Identification Walk
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Hosted by Julianna Goertzen from ReForest London
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1:00PM - 3:00PM
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Victoria Park
Sunday Sept 20th
Migratory Birds and their Diet
Guided Walk
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Hosted by Gabby Orfanides, PhD Student at Western University
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9:00AM - 11:00AM
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Kilally Meadows
Reptiles, Amphibians and Bugs
Guided Walk
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Hosted by iNaturalist Ambassador Mitch Troop
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2:00PM - 4:00PM
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Medway Creek
Monday Sept 21st
Moth Night #1
Guided Bioblitz
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Hosted by Tristan Ducharme, PhD candidate at Western University
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9:00PM - 11:00PM
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Western University
Thursday Sept 24th
Friday Sept 25th
Discover Urban Grasslands
Guided Walk
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Hosted by Tim Hain, Assistant Professor of Biology at Western University
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3:30PM - 5:00PM
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Baldwin Flats
Birds and Bugs
Guided Walk
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Hosted by Tristan Ducharme, PhD candidate at Western University
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4:00PM - 6:00PM
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Kilally Meadows
Saturday Sept 26th
All About Galls through Insect Plant Manipulation
Guided Walk
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Hosted by Angeli Sahdra, Spatial Ecology Researcher
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12:00PM - 2:00PM
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Meadowlilly Woods ESA
Moth Night #2
Guided Bioblitz
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Hosted by Tristan Ducharme, PhD candidate at Western University
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9:00PM - 11:00PM
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Kilally Meadows
Sunday Sept 27th
BioBlitz Cedarcroft Nature Reserve
Bioblitz
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Hosted by Bioblitz Volunteers
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10:00AM - 12:00PM
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Cedarcroft Nature Reserve
Turtle Trek
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Hosted by Kristin Haight, Bioblitz Volunteer
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2:00PM - 4:00PM
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Mill Pond ESA in Dorchester
How To Participate on Your Own
1) 📱RECORD OBSERVATIONS | Sept 18-27, 2026
Explore nature from wherever you are in the London by finding wild species close to home. Even watching birds from your window is helpful!
Record observations by taking a picture or recording a sound of what you find and uploading it to iNaturalist, making note of the location.
Join the Great Canadian Bioblitz iNaturalist project for your observations to be included in the challenge.
Be aware of human and wildlife safety at all times and explore natural areas responsibly with ethical wildlife photography.
To support biodiversity research, focus on insects, birds, weeds, and other wild plants, animals and fungi (rather than cultivated species like garden flowers or pets).
You don't need to have any prior knowledge about nature in order to participate. iNaturalist will help identify the species in your photo and the iNaturalist community will help verify that it's correct. Check out these guides on how to use iNaturalist.
You can look for wildlife in your own backyard, in green spaces, or head to one of London's Environmentally Significant Areas. Observations anywhere in the City of London boundaries will count in the challenge.
Keep an eye open for flowers, lichens, trees, birds, mammals. You may even see some butterflies, bees and other insects!
2) 🔍 HELP IDENTIFY | September 18 to October 4, 2026
Can you recognize some of the species we see around London? If so, you can help confirm iNaturalist IDs for what was found -- for your own observations and others’!
Log into iNaturalist and review the observations made over the weekend.
