City Nature Challenge – Event Dates Announced!

Silver City Watershed Keepers is organizing a City Nature Challenge in Silver City and the broader Grant County area from April 25-28, 2025! The City Nature Challenge (CNC) is an annual bioblitz event, with citizen scientists from around the world working to record as many species as possible during a four day challenge. 2025 marks the 10th anniversary of this international event, with a theme of “Bringing the World Together for Biodiversity.” Last year, CNC participants recorded nearly 2.5 million observations of plants, fungi, and animals in their local areas. Over 65,000 species (including 3,900 rare/endangered/threatened species) were observed and over 83,000 people have participated.
Why is this event important? We believe that it is critical for members of our community to know the wildlife that also calls our watershed home. CNC emphasizes the role that towns and cities play in affecting biodiversity and invites people of all ages and abilities to explore nature in their back yards, city parks, and beyond! Observations made during the CNC will all be publicly available on the iNaturalist database and app. These observations can be viewed by other people in our community, used in schools for biology lessons, utilized by local governments and conservation organizations to monitor invasive species or ecosystem health, and employed by scientists to define shifting species’ ranges, migration corridors, or relationships (e.g. plant-pollinator interactions).
Schedule of Events
- April 19: iNaturalist training – Join us for a virtual training meeting in preparation for City Nature Challenge 2025 – Silver City. We will talk about the history of the City Nature Challenge, practice using iNaturalist to take photos and identify species, and learn how to improve your “good” observations into “great” ones!
- Hosted by event organizer Alesia Hallmark, Silver City Watershed Keepers program Coordinator
- Zoom link: https://us02web.zoom.us/j/81136570596?pwd=6427ez7JpTatYD9lT3xjA5SOwEbVUi.1
- Passcode: 833657
- April 25: “Birds and Bees” – Visit native cacti, wildflowers, and trees at the Silva Creek Botanical Garden and Silver City Waterworks. These plants host to view the dazzling array of animal life, from pollinators, to predators and pests, that depend plants for food and shelter.
- This event is handicap accessible. Accessible parking is available at Silva Creek Botanical Garden and guests are welcome to travel at their own place around the smooth gravel paths of the garden.
- Experts from the Gila Native Plant Society and Bird Alliance of Southwest New Mexico will be present to help identify species
- Erik Geyer, Assistant Director of Urban Forestry at Western New Mexico University and ISA Certified Arborist, will also be present to talk about native, naturalized, and cultivated trees at the garden and around Silver City.
- April 26, 9am-11am: “Life on the Trail” – Explore Silver City’s Boston Hill Open Space & Trail System. This location is home to over 300 plant species and a surprising diversity of reptiles and birds.
- Please register for meet-up location. This hike will cover ~2 miles of rocky and sometimes steep trails. Hike rated as easy-moderate.
- Andrew Tree, creator and curator of the Boston Hill Plant List, will help hikers discover the plants, both common and rare, that call this urban space home. Andrew will also provide pointers on how to make great iNaturalist observations, from descriptive photographs to helpful notes.
- Dr. Caleb Loughran, Assistant Professor of Biology, Department of Natural Sciences, Western New Mexico University, will (safely!) locate and identify snakes and lizards.
- April 26, 12:30pm-3pm: “Tree Frogs of Cherry Creek” – Traverse Cherry Creek to find amphibians and reptiles, like canyon tree frogs, as well as aquatic insects and fish along this forested creek.
- Please register for meet-up location. This hike will cover ~2 miles of stream-side trail, with multiple water crossings. Hike rated as moderate.
- Hosted by members of the Amphibian and Reptile Conservancy: Maya Morales, Grace Laskey, and Jacob Bartley
- April 27, 9am-noon: “Wild Silver City” – Journey through Silver City neighborhoods to learn about the wild plants and animals that live alongside humans in our built environments.
- Please register for meet-up location. This hike will cover ~2 miles of urban sidewalks and trails. Hike rated as easy.
- Hosted by Dr. Bill Norris, Professor of Biology and Herbarium Curator, Department of Natural Sciences, Western New Mexico University; lead author of the Flora of Silver City
- April 28, 9am-noon: “Riparian Oasis” – Investigate the shady banks of San Vicente Creek, where urban streets meet a wild riparian forest to create a biodiversity corridor through Silver City.
- Please register for meet-up location. This hike will cover ~2 miles of streamside trail, with some water crossings, large rocks, and fallen trees. Hike rated as moderate.
- Experts from the Gila Native Plant Society and Bird Alliance of Southwest New Mexico will be present to help identify species.
- Dr. Gregor Hamilton from The Nature Conservancy and Eric Head from Trout Unlimited will be present to discuss riparian wildlife within San Vicente Creek and the Gila and Mimbres watersheds of greater Grant County.
Space on these guided hikes is limited! Please RSVP to reserve a spot during one (or more) of our events. If group size limits are exceeded, spots will be given on a first come, first serve basis.

