You made our 2025 Big Backyard BioBlitz a massive success!

This year, a whopping 6,647 BioBlitzers proved how powerful community science can be.

Thank you to everyone who snapped photos and recorded audio clips. Together, you documented an amazing 6,000 + species and shared over 59,000 observations of plants, mammals, birds, insects and other living creatures.

All of this data helps conservation experts map species distributions and monitor long-term changes across Canada. They can reveal shifts in migration or hibernation patterns, changes in flowering timelines, or variations in fruit and seed production — all potential signs that climate change is affecting plants and wildlife. The more we know about nature, the more we can support it.

Here’s just a sample of what was found.

Most frequent species documented

Monarch butterfly

Common milkweed

Wild carrot


Most frequent globally threatened species observed

Monarch butterfly

Common grackle

Green ash


Most frequent introduced/invasive species observed

Wild carrot

Japanese beetles

Purple loosestrife


Observations by category

29,327

Plants

19,365

Insects

4,407

Birds

1,995

Fungi (including Lichen)

467

Amphibians

1,250

Arachnids

819

Mammals

510

Molluscs

205

Reptiles

You can view more findings here. Thank you again for participating, we hope you had as much fund as we did!

What past BioBlitzers have said

Previous Next

Don’t miss out in 2026!

The 2026 event will take place July 27 - August 3. Sign up now and mark it in your calendar.

Please fill out this field
Please fill out this field
Please select an option.
Please enter a valid email

Just starting out or still need a little support identifying the species around you? Sign up as a Wilderness Wanderer.

Know the difference between a thrasher and a thrush? Soapwort and sneezewort? Sign up as an Eagle-eyed Expert.

Please select an option

By clicking on the Signup button, I also acknowledge that I have read NCC's Privacy Policy and agree that my personal information will be processed in accordance with this policy.