May 2026
The City Nature Challenge is a global event designed to get people outside, engaging with nature and helping to make iNaturalist observations. We will be hosting a variety of 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.
Upcoming City Nature Challenge Events
Wednesday April 22nd
Webinar
Biodiversity: Community Action and the Role of Gardens
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Guest Lorraine Johnson
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7:00PM - 8:00PM
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Zoom (Sign up for link)
London CNC kicks off with a webinar with guest Lorraine Johnson, renowned writer, editor and community advocate who, when pressed to describe what unifies her work, has settled on the term cultivation activist. She'll speak about how local efforts can make a positive difference to biodiversity.
Join us on a group iNaturalist Bioblitz or on a
Guided Nature Walk to learn about biodiversity
in London from knowledgeable naturalists!
We'll also have prizes like local passes and gift cards!
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, guides 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 exploring. We will make iNat observations and share information about some of the interesting species that we find along the way.
All of our events are for anybody - 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!
Friday April 24th
Early Signs of Spring Wildlife
(Guided Walk)
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Hosted by Hiking with Kathleen
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9:00AM - 11:00AM
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Medway Valley Heritage Forest
Exploring Western's Biodiversity (Bioblitz)
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Hosted by Biodiversity Inventory at Western
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1:00PM - 3:30PM
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Thames River
Bioblitz Bingo
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Especially fun for kids!
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5:00PM - 7:00PM
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Museum of Archaeology
Evening Spring Walk (Guided Walk)
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7:30PM - 9:30PM
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Kilally Meadows ESA
Prizes
Prize!
Prize!
Registration Closed
Registration Closed
Saturday April 25th
Family Nature Walk (Guided Walk)
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Hosted by UTRCA, Friends of Medway Creek & Museum of Archaeology
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9:30AM - 11:00AM
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Medway Valley Heritage Forest (Snake Creek)
Buds and Bugs Discovery Bioblitz
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Hosted by Friends of Urban Ag
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10:00AM - 12:00PM
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Highbury Wetlands
Prize!
Spring Wildflowers and Forest Ecology
(Guided Walk)
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2:00PM - 4:00PM
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Meadowlily Woods
Bugs and Migratory Birds (Guided Walk)
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5:00PM - 7:00PM
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Kilally Meadows ESA
Nocturnal Insect Bioblitz
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9:00PM - 11:00PM
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Western University
Prize!
Prize!
Prize!
Spring Migratory Songbirds and Waterfowl
(Guided Walk)
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9:00AM - 11:00AM
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Greenway Park
Spring Mushrooms and Forest Ecology (Guided Walk)
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12:00PM - 2:00PM
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Westminster Ponds (Behind Tourism London)
Bug Bioblitz
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2:30PM - 4:30PM
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The Coves
Garden Escapees: Mapping Introduced Horticultural Plants (Guided Walk)
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Hosted by Old North East Neighbourhood Association
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5:00PM - 7:00PM
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Kilally Meadows ESA
Sunday April 26th
Registration Closed
Prize!
Prize!
Prize!
Registration Closed
Monday April 27th
Birds and Flowers (Guided Walk)
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Hosted by Biodiversity Inventory at Western
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9:30AM - 11:30AM
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Baldwin Flats
Creek Exploration Bioblitz
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Hosted by Upper Thames River Conservation Authority
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5:30PM - 7:00PM
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Fanshawe Conservation Area
Selected walks
have prizes for
iNaturalist
observations!