Results of 2024 Denver-Boulder City Nature Challenge are in!
The City Nature Challenge is a yearly event for folks in cities all over the world to observe and document biodiversity in their own backyards. To participate, people make observations of any organism
City Nature Challenge 2024
Join your community in documenting biodiversity during the City Nature Challenge! Having started as a friendly competition in California, the global challenge, now in its 9th year, has grown to
Results of 2023 Denver-Boulder City Nature Challenge are in!
The City Nature Challenge is a yearly event for folks in cities all over the world to observe and document biodiversity in their own backyards. To participate, people make observations of any organism
2022 Denver-Boulder City Nature Challenge results are in!
Every spring the City Nature Challenge provides city-dwelling naturalists with the opportunity to observe and document the wildlife around us. For three days from the end of April into early May
City Nature Challenge: Meet Your Neighbors
We cordially invite you to participate in this year’s City Nature Challenge, April 29 – May 2. It’s an opportunity to take a closer look at the life that’s all around us – and make some introductions
To the Community Researchers, to Make Much of Time
A poem for the City Nature Challenge. Gather ye photos while ye may, April 30 – May 3 will be fast a-flying; And this flower picture from today, Tomorrow we’ll be identifying. The glorious app for