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